有利變異 的英文怎麼說
中文拼音 [yǒulìbiànyì]
有利變異
英文
favorable variation-
High accuracy kdp crystal optics is now considered as one of optics that is the most difficult to be processed for its series of disadvantageous characteristics to optics processing such as anisotropy, soft nature, easy to deliquesce, high brittleness, sensitive to temperature change, easy to crack and so on. therefore the long machining period, low percent of pass and astaticism quality has become the bottleneck of icf technology, and the surface quality control of kdp crystal processing has become the key problem to be solved in the research of icf in our country
Kdp晶體零件是目前公認的最難加工的光學零件之一，因為kdp晶體具有各向異性、質軟、易潮解、脆性高、對溫度變化敏感和易開裂等不利於光學加工的特點，所以加工周期長、合格率低、質量不穩定成為慣性約束聚變技術的瓶頸， kdp晶體超精密加工表面質量控制問題已經成為我國慣性約束聚變研究中亟待解決的關鍵問題。The result showed that non - enzymatic browning of greengage juice could be inhibited and natural primrose yellow could be kept in the plasming of greengage by adding 0. 2 % ( mass fraction ) sodium erythorbate ; non - enzymatic browning of greengage juice was restrained more remarkably by vacuum concentration than by normal pressure concentration ; the non - enzymatic browning of greengage juice increased and the color darkened with the increase of concentration and processing temperature ; non - enzymatic browning of greengage juice in the storage could be inhibited under the condition of low temperature, and frozen storage was the best store method of greengage concentrated juice
摘要結果表明：在青梅果打漿時加入質量分數為0 . 2 %的異抗壞血酸鈉，可防止果汁氧化褐變而保持天然淡黃色澤；減壓濃縮較常壓濃縮明顯抑制了非酶褐變的發生；隨著果汁含量和加工溫度的提高，非酶褐變加快，色澤加深；低溫有利於青梅濃縮汁的貯藏，冷凍貯藏是最佳的貯藏條件。Based on the two ctd data sets from the cruise of the summertime in 2000 and wintertime in 2001 in bohai sea and the collected historic observed thermohaline data, we analyse systemically the distributional characteristics of temperature, salinity and density in wintertime and summertime in the bohai sea and the results reveal that the current hydrologic characteristics of the bohai sea have some obvious variances relative to the previous research results. in summer there are three low - temperature centers in the middle - layer and underlayer of the middle parts of the bohai strait, liaodong bay - mouth and bohai bay - mouth, but there is a uniform high - temperature center in the middle part of the bohai sea. in winter the isotherms extend westward and northward to the bohai sea from the warm core of the bohai strait and a cold - water tongue off the qinhuangdao spreads southeastward out, so the saddle - like isotherm pattern is formed in the middle part of the bohai sea
利用2000年夏季和2001年冬季渤海兩次ctd資料和以前收集的渤海溫鹽調查資料，分析了渤海冬、夏季溫鹽密度的分佈特徵，結果表明，渤海現有的水文特徵與以往研究結果相比發生了明顯的變異：夏季在渤海海峽、遼東灣口和渤海灣口中部中、下層存在三個低溫中心，在渤海中部則出現一個上下均勻一致的高溫中心；冬季等溫線以渤海海峽暖中心向西和向北兩個方向伸入渤海，而從秦皇島外海有一冷水舌向東南方向伸展，在渤海中部海域形成「馬鞍狀」等溫線結構。Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements
利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大Abstract : digital basinis made from digital elevation model considering spatial variability within a catchment. on the basis of digital basin, the digital approach to describing hydrological processes within a catchment is investigated. digital hydrological model is regarded as a modern physically - based modeling technique that includes a large amount of information. the case study on the shiguanhe catchment in the huaihe river basin, intensified observation field of gewex asian monsoon experiment project, has shown that the digital mode lperforms very well not only in simulating runoff processes at any specific site, but also in simulating spatial distribution and temporal variation of hydrological elements and state variable ( especially soil moisture ), if compared with traditional hydrological models. that provides solid foundation for full use of now available observation in formation and in - depth mining of hydrological data
文摘:考慮流域下墊面空間變異性，基於數字高程模型構建了數字流域，並在此基礎上對描述流域水文物理過程的數字方法進行了探討.文章認為，數字水文模型是一種有物理基礎的包含大容量信息的現代模擬技術.史灌河流域實例研究表明，數字水文模型可以十分方便地輸出水文要素和狀態變量的空間分佈與時間序列，這對充分利用現有觀測信息進行水文信息的深層挖掘創造了條件By applying the theory and method of geological anomaly, it is focused on the analysis of the characters of major geological anomalies and their effect of mineralization in daye - jiurui region. the analysis result shows that the basement fault anomalies control a few major large hidden batholiths and their associated orefields ; that the anomalies of cover structure confine most cu - au deposits and fe - cu deposits within their scope ; that the geochemical anomalies and lithofacies - paleogeographical anomalies are major geological factors leading to trataboundness of some cu - au deposits ; that the anomalies of rock operties provide the favorable chemical and physical conditions for the ore - forming process, including the seepage, circulation, convergence and deposit of ore - bearing hydrothermal solution ; that the anomalous ctive stage of mesozoic magmatite is almost consistent with the major mineralization epoch of the fe, cu deposits, and the structure of multi - levels, and the zoning in magmatic system determine the spatial distribution of the mineralization system. then, based on the above analysis, a comprehensive variate, geological combination entropy, is brought forward for reflecting the complex degree of the combination of geological ore - controlling factors. after circumscribing the anomalies of geological combination entropy, the relations between the anomalies and ore deposits are determined
從地質異常的角度，重點分析了大冶九瑞地區主要地質異常的特徵及其對成礦的影響.由分析可知：基底斷裂異常控制了本區若干重要規模較大的隱伏巖基及伴生礦田，而蓋層構造異常控制銅金礦床和鐵銅礦床的空間位置；地層的地球化學異常和巖相古地理異常是造成一些銅金礦床層控性的主要地質因素；蓋層的巖性異常為含礦熱液的滲流、循環、聚集和礦質沉澱等一系列成礦作用提供了有利的物理和化學條件；中生代巖漿巖的異常活動期也是本區主要的鐵銅成礦期，巖漿巖系統的多層分枝和分帶性結構控制了本區成礦系統的三維空間分佈.在上述分析的基礎上，構置了地質組合熵作為反映控礦地質因素組合系統結構復雜程度的綜合變量，並圈定出組合熵異常，由此確定了綜合地質異常與礦床的關系First, this paper gives an introduction of some methods of unequal probability sampling, their estimators and variance estimators, including sampling with pps with replacement, methods of sampling without replacement suggested by brewer, durbin, sampford, des raj, murthy, rao - hartley - cochran. then, at the basis of rao and bayless ' s study, we consider that population can be splited two random subpopulations, which are respectively drawn from different infinite super - populations, and compare the stabilities of estimators of the methods that given above. we find that the minor difference between two super - populations has great effect on the efficiency of the estimators for the population with moderately large coefficient of variation ( c. v. )
本文首先從理論上介紹了若干種不等概率抽樣方法，它們的估計量、估計量的方差及其估計，其中包括有放回ppz及pps抽樣，不放回不等概率抽樣中的brewer 、 durbin 、 sampford 、 desraj ， murthy 、 rao - hartley - cochran等人的方法；其次，在rao和bayless兩人就樣本單元數n = 2的情形對上述抽樣方法進行比較的基礎上，將總體隨機地分成兩個子總體，視每個子總體取自不同的線性超總體，在文中，我們利用計算機實現隨機分組，並通過畫圖比較各方法估計量的穩定性，結果表明，對變異系數c . v . （ x ）較大的總體而言，兩個超總體之間的微小差異將對估計量的穩定性產生很大的影響，從而說明rao和bayless的比較結果還不夠完善。The analysis of the large - scale synoptic situation shows that strong precipitation is closely related to the explosion of monsoon and the intensification of cross - equatorial flow which bring a lot of vapor and meet with cold masses at the eastern of northwest district on 8th, june causing extremely heavy rainfall ; that subtropical high - level jet at 200hpa, subtropical high at 500hpa and low - level jet at 850hpa are the weather backgrounds favorable to strong precipitation ; that the pattern of eastern highs and western lows and the establishment of a low - level jet and the coupling between upper - and low - level patterns that determine that the rain occurred in the east of the northwest china ( on average, this is the rainy season for the south of china, but not for the northwest china ) ; that water vapor comes from southerly and easterly flow which converge at the eastern of northwest district with convergence mainly in lower levels and pbl ; that the high value of the whole - level apparent heat source < q1 > is near the area of large rainfall in the direction of northeasterly - southwesterly agreeable to shear line very well and the condensation latent heat releasing is main heat source with vertical advection item playing key role in q1 and q2 ; that there is a vertical secondary circulation crossing low - lever jet whose ascending branch is at the area of large rainfall ; that the construction of convection instability and conditional symmetry instability results that there is not only deep thermal instability, but also moisture influx and triggering mechanism of thermal instability causing strong torrential rain
作為對比，本文還對2002年6月24 - 25日發生在北京地區的強地形雨進行了分析，並討論陜南、北京地區兩地暴雨的異同點以及地形作用的共性和個性，為兩地暴雨預報提供有益的參考，得出了一些很有意義的結果： 1大尺度環流背景分析表明： （ 1 ） 「 02 . 6 」強降水與6月上旬越赤道氣流和季風爆發密切相關，攜帶大量水汽的偏南氣流與冷空氣於6月8日交匯在西北地區東部，導致了這次強降水的發生； （ 2 ） 200hpa的副熱帶西風急流、 500hpa副高以及850hpa的低空急流的配置非常有利於本文分析之陜西強降水的發展與維持。大尺度形勢分析表明，東高西低形勢場、低空急流的建立和高低空形勢的配置決定了這場降雨出現在西北地區東部。與暴雨區相聯系，存在一支橫越低空急流的經向垂直環流，暴雨區處于該垂直環流的上升支； （ 3 ）偏南和偏東氣流水汽通道在西北地區東部交匯，水汽的輻合積聚主要在對流層低層和行星邊界層內完成； （ 4 ）整層的視熱源< q _ 1 >高值區在暴雨區附近呈東北-西南向分佈，與切變線走向非常一致，降水產生的凝結潛熱釋放是強降水區大氣的主要熱源。Veneer dyeing can improve wood visual characteristics and imitatethe color and luster of precious wood species, to increase the decorative effect. the veneers of hardwood species such as % populus tomentosa, paulownia elongata % were adopted to make dyeing experiments by using acid dyestuff. the result shows : the acid dyestuff in textile industry could be used in wood dyeing process. compound dyeing can be adopted by using the mixture of several kinds of dyestuff. the different treatment methods before the wood was dyed affects the dyeing effect of wood. there is a great difference in the deformed degree of dyeing veneers, smooth level has a relation with wood density. the density of dyestuff, dyeing time and dyeing temperature and so on have many influences on dyeing effect. different technological process has been used in veneers of different wood speicies
木材單板染色有利於改善木材視覺特性，可以實現模仿珍貴樹種木材的色澤，提高裝飾效果.該研究選取毛白楊和泡桐等闊葉樹種木材單板採用酸性染料進行染色實驗，結果表明：紡織工業用酸性染料可用於木材染色，也可以採用幾種染料混合復合染色；木材染色前的不同處理方法影響木材的染色效果；染色單板的變形程度有較大差異，平整度與木材密度相關；染料濃度、染色時間和染色溫度等對染色效果有較大的影響，不同樹種單板應採用不同工藝Theoretically, the author tries to make clear that urban village community is a social organization with multi - serviceability and rich social resources such as social funds. the urban village community, which has both historical continuity and contemporary viability, is established on the base of non - agricultural economy in the process of urbanization and under the social circumstances that both industry and occupation have been transformed and the geographical locations of villages " removed " into cities. the resource value and function are reflected in the dynamic process of complete urbanization, that is, the urban village community is the unique field where the interests and rights of the special " villager " groups who have entered cities lie and the " villager " groups and their communities strive for development and realization of urban harmonization
理論上，筆者想通過個案村的研究，力圖闡明，鄉村城市化過程中，在產業與職業都已經轉型的社會條件下，在村落的地理坐落也已經「走進」城市的情形下，建立在非農社會經濟基礎上的、既有歷史延續性、又具有現實變異性的都市村社共同體是一個內含豐富社會資本等社會資源與多層面適應性功能的社會組織，尤其是當中的資源價值及其功能意義同樣體現于徹底城市化的動態過程中，即都市村社共同體是已經走進城市生活的特殊「村民」群體之利益與權益高度依附於其中的獨特場域，是「村民」群體及其社區謀求發展與實現城市融合的重要倚賴。In this paper, by explored geo - physico - chemical prospecting method for looking for oil in prior prospect, the authors summarize a suit of prospective technique and program, which is valid to oil - geology trait of zhidan area and composed of ; oil gas geo - chemical prospect ( acid degradation of hydrocarbon, absorbed - fluorescent spectrum, ultraviolet radiation spectrum, methane carbon - isotope ) non seismic detection in favorable explorative area which confirmed by chemical prospect ( matural potential, gamma energy spectrum. accurately magnetic analysis ) resistively prospecting in anomalous area which confirmed by physicalprospect successful general evaluation of geo - physicochemical prospect
通過勘探早期地質物化探綜合找油方法實驗，筆者總結了一套適合志丹探區石油地質特點的勘探方法組合和勘探程序：油氣地球化學勘探（酸解烴、吸附烴、熒光光譜、紫外光譜、甲烷碳同位素、蝕變碳酸巖）化探圈定的有利勘探區進行非地震物探（自然電位、伽瑪能譜、高精度磁測、土壤測氧）物探圈定的異常區進行電阻率測深勘探地質物化探成果綜合評價。This study dealt with the identification and evaluation of 8 maize populations from tropical and subtropical regions under the ecological conditions in zhengzhou, henan. results showed that the significant delaying days to shed and days to silk, discoordinating for the development of male and female, higher plant and ear height, more leaf numbers, high barreness, worse performance of ear traits compared with the ck ( temperate population ) were found, which showed the tropical and subtropical populations could not be utilized directly under the ecological conditions in zhengzhou. by using selection and improvement the tropical and subtropical populations can be used to broaden the genetic base of temperate maize breeding, beause of the greater genetic variation and higher selection potential within each population. the different performances of the sensitivity to photoperiod were observed among different tropical and subtropical populations and different traits. the asi, time to silk, ear height, leaf numbers, grain yield per ear could be used as the good evaluation traits for identifying the sensitivity to photoperiod
對8個熱帶、亞熱帶玉米群體在鄭州生態條件下的表現進行鑒定和評價，結果表明，熱帶、亞熱帶群體散粉、吐絲期顯著延遲，雌雄不協調，植株和穗位高、葉片數增多、空稈率高，結實性差，果穗性狀均明顯劣於溫帶對照，在鄭州生態條件下不能直接利用，但是群體內具有較大的遺傳變異和選擇潛力，可以用來拓寬現有玉米種質的遺傳基礎；不同熱帶、亞熱帶群體的光周期敏感性不同；不同性狀對光周期反應的敏感程度不同， asi 、吐絲期、穗位高、葉片數、穗粒重可作為鑒定光周期敏感性的較好指標The theory and the implementation of the genetic algorithms are discussed in detail. the question on how to choose the crossover probability, the mutation probability, the scale of population and the numbers of the generation is discussed. then, the mathematics model of the optimal design is established
詳細介紹了遺傳演算法的理論和實現技術，探討了交叉概率、變異概率、群體規模、進化代數等變量的選取問題，建立起了基於遺傳演算法的深基坑支護結構設計的優化模型，結合彈性地基梁有限元法，利用fortran語言編制了gafortran優化程序，程序中包括普通遺傳演算法和改進遺傳演算法。Based on the genetic algorithm ' s global searching capability with probability regulation and euclid ' s space distance metric to settle multi - objective, the algorithm that integrates multi - objective ' s decision - making into the modified genetic algorithm to solute the optimal model with discrete variables and multi - objective is proposed. during the algorithm ' s design, the euclid ' s space distance metric is proposed to transform the multi - objective problem into single objective problem. and some modified measure to fitness function and crossover probability and mutation probability are used to improve the performance of the algorithm and avoid premature convergence
演算法設計過程中，利用歐幾里德空間距離準則和罰函數法，將含有約束條件的多目標規劃問題轉化為無約束的單目標優化問題；針對簡單遺傳演算法出現的早熟，構造隨進化代數動態調整適應度的適應度函數和隨個體適應度自適應調整的交叉、變異概率；提出比例選擇與精英保留策略相結合的選擇、兩點交叉和簡單變異的改進遺傳演算法。When basement rock rupture pass through the well cross section, the fracture belts can be identified with some evidences, for example, the compensate neutron increasing and the stratum density diminishing synchronization, the dual - laterolog resistance diminishing greatly and the positive difference between the deep laterolog resistance and the shallow laterolog resistance appearing. when the compensate neutron increase, the stratum density diminishing and the dual - laterolog resistance value diminishing slightly, the fracture belts can be confirmed with the intrusive vein at high frequency in well cross section
當有基巖斷裂在井削麵上通過時，若補償中子增大與地層密度變小同步發生，雙側向測井電阻率有明顯變低並有正差異出現，則可以判別為裂縫發育帶；當補償中子增大，地層密度變小及雙側向幅度變小都不太明顯時，則可以利用井剖面中頻繁出現的侵入巖脈來確定裂縫發育段。Other variations useful in some way to each being in the great and complex battle of life, should occur in the course of many successive generations.
在廣大而復雜的生存斗爭中，有利於生物本身的其它變異，難道在許多世代的歷程中就不會發生嗎？Under the direction of chinese soil taxonomy, part purple soils developed on the purplish standstones of j2 # j3 in sichuan basin were systematically studiedaccording to natural landscape, profile modality and quick - test, applying to methods statistic analysis and system integration, main affecting factors, indexs of soil series taxonomy and retrieval orders were systematically discussed. the results showed : 1 ) organic substance, total nityogen, total phosphate, total potassium and particle size composition were distinctly related with many soil characters. organic substance, calcium carbonate, available phosphate # size composition were much different in all swatches. besides, soil structure and the depth had profound affection to it. 2 ) affecting factors : soil structure, texture style and organic substance phosphorous
本文以土壤系統分類理論為指導，以四川盆地侏羅系蓬萊鎮組、沙溪廟組和遂寧組紫色巖上發育形成的部分紫色土為研究對象，利用spss統計軟體相關功能，結合供試土壤的自然景觀、剖面形態和室內測定的理化性質，對土系分化的影響因子、土系劃分指標和檢索順序進行了系統的探討，結論如下： （ 1 ） 、供試紫色土中有機質、全氮、全磷、全鉀和顆粒組成與多個土壤性質均呈顯著或極顯著相關；有機質、碳酸鈣、有效磷、顆粒組成等性質在供試土壤方差分析中變異系數均較大；土體構型及土體的深度對土壤性質也有深刻影響。Among a total of 134 bands perceived via 16 primers from 7 populations of s. grandis in different regions, 120 bands or 89. 55 % are polymorphic, showing the high genetic variation of individuals
在大針茅7個群體中，利用16個有效引物共獲得134條譜帶，其中多態性譜帶120條，佔89 . 55 % ，說明個體間發生較高的遺傳變異。According to the analyses of the research results about the feasibility of 4 - d seismic and the successful 4 - d seismic cases of foreign companies, the author put forward the suggestions for 4 - d seismic pilot area selection ; briefly analyzed the influential function of producing way on the seismic response ; utilized theory calculation, coring data analyses, and reservoir numerical simulation to define the fluid substitution effects on the p - wave velocity. through long time water driven to the reservoir, some of the properties and the log curves have changed, the author tried to find the variation rule of the reservoir and its effects on seismic velocity. the " blind point " in 4 - d seismic feasibility study both in china and overseas was found, that is the lack of consideration of the influence of physical property variation by long time water driven on the seismic response
在深入分析國外四維地震可行性研究成果和成功實例的基礎上，提出了有利於水驅四維地震成功的工區優選條件；簡要剖析了各種開采方式及其對地震特性的影響；利用理論計算、巖心分析、油藏數值模擬三種方法確定了流體替代對縱波速度的影響；通過對長期水驅造成的物性參數、測井曲線以及油藏溫度和壓力變化規律的總結，分析了這些變化對地震速度的影響，指出了目前國內外水驅四維地震可行性研究中存在的盲區?沒有充分考慮長期注水造成的物性、溫度和壓力變化對地震響應的影響，完善了水驅四維地震可行性研究的內容；在考慮了這些變化因素后，高29斷塊水驅四維地震可行性研究結果表明：四維地震監測注水前沿可能要比監測油藏變化容易的多；以四維地震巖石物理可行性研究結果為基礎，提出了五個有助於突出四維地震造成的微小差異的途徑，為今後水驅四維地震研究指明了方向。The problem of genetic influence of the fruits and vegetables produced by quite a few newly developed techniques of bioengineering on human body, including ling term genetic variations, either favorable or unfavorable, and the possible diseases resulted from these foods, has rationally attracted much medical research interest worldwide
利用若干新近發展的人體生物工程技術（包括長期基因變異，含有利變異和不利變異）培育出的水果蔬菜導致的基因影響和可能由此造成的疾病問題自然而然地引起了全世界范圍內醫學研究者的濃厚興趣。分享友人