自然變異 的英文怎麼說
中文拼音 [zìránbiànyì]
自然變異
英文
natural variation-
The reproductive characteristics and population structure of artemisia ordosica, hedysantm scoparium, caragana korshinskii and the reproductive characteristics of annual plants eragrostis poaeoides and bassia dasyphylla were observed in shapotou artificial revegetation area. stability of the artificial vegetation was appraised from the views of its persistence and variability under local natural condition. the study showed that : the artificial - natural vegetation built with sandbreaks and plants is stable in shapotou area
通過對沙坡頭人工固沙植被區主要建植種群檸條（ caraganakorshinskii ） 、花棒（ hedysarumscoparium ）和油蒿（ artemisiaordosica ）的繁殖特性及種群結構的研究，以及自然侵入的一年生草本植物小畫眉草（ eragrostispoaeoides ）和霧冰藜（ bassiadasyphylla ）繁殖特性的研究，探討了在植被的持久性和變異性，分析評價了主要受惡劣環境壓力下的人工固沙區植被的穩定性。Through the analysis on the discrepancy between the indexes of land use and landscape structure of both the periods, the change of the eco - environment caused by the causations of both the nature and the human activities is pointed out that the total area of the studying region is somewhat reduced ; the alkali - saline land therein is utilized for fishery breeding ; a part of the unused land and water area are basified ; the sorts of landscape are rich and uniform and serious fragmentations are locally occurred
通過分析兩期土地利用及景觀結構指數之間的差異性，指出由自然和人為原因引起的生態環境的變化：研究區總面積有所減少，鹽堿地改良後用于了魚蝦養殖，部分未利用地和水域鹽堿化，區域景觀類型豐富且均勻，局部破碎嚴重。We can provide more than enough genetic information to account for the variability in nature.
可提供的遺傳信息對于解釋自然界中的變異性來說已經綽綽有餘。The species that make up natural ecosystems usually display a wide range of genetic variability.
構成自然生態系統的生物種，通常表現有較大范圍的遺傳變異性。Consequently, on the basis of non - winkler foundation model, a finite - element method that utilizes foundation flexibility matrix into iterative calculation is proposed in this paper originated from the item " the optimal design theory and research of pile capping beam " sponsored by natural science fund of hunan province, which the continuity of soil mass can be accounted for under various boundary conditions, different loadings and irregular beam characters
本文結合湖南省自然科學基金項目「樁基承臺梁優化設計理論與方法研究」 ，針對非文克爾地基（半空間、線性變形層或單向壓縮層地基模型等）上的樁基承臺梁，提出一種利用地基柔度矩陣來進行迭代的有限單元法，可充分考慮梁下土體的連續性，並對基礎與土體脫開、承臺梁截面變化、梁體邊界條件復雜、上部荷載類型變化以及梁下基樁承載力差異等情況進行分析計算。In this paper, a genetic algorithm was presented to solve the problem of the searching of the optimal coalition structure. we designd one - dimension chromosome coding structure and the corresponding improved uniformity crossover operator and the heuristic mutation operator
我們給出了一種求解最佳聯盟結構的gas演算法，設計出了一種簡單的一維自然數染色體編碼結構和改進的均勻交叉運算元以及啟發式變異運算元。Dynamic electrocardiography ( dcg ) can continuously record electrocardiosignal ( ecg ) for 24 hours or longer, while the patients can active normally. with the help of modern computer, physicians can analysis the signal, find out all kinds of arrhythmia events and st segment abnormal events, thus they can get important foundations for diagnosis
=動態心電圖（ dynamicelectrocardiography ， dcg ）能夠在患者自然生活狀態下連續24小時或更長時間記錄心電信號，藉助計算機進行分析處理，發現各種心律失常事件及st段異常改變，獲取重要的診斷評價依據。Great evolutions of international politic - economic patterns and rapid developments of regional economic blocs have made it possible for northeast asia countries to explore mutual economic cooperation at all levels since 1990s ; however, regional economic cooperation will become more and more intricate than ever, resulting from many differences in natural resources, labor quantity, territory disputes, social value orientation and so on
東北亞地區被稱為最有發展潛力的經濟區域之一，國際政治、經濟格局的演變和區域經濟集團化趨勢進一步加強，為該地區各種層次的合作提供了可能性。然而，由於各國自然資源、人力資源稟賦、價值觀的不同及領土糾紛等政治因素的影響，致使東北亞區域經濟合作異常錯綜復雜，進展緩慢。Based on natural selection, it executes three same and simple genetic operators : selection, crossover and mutation. under the leading of fitness value, it makes an efficient searching in complex spaces until acquiring the best result
它基於自然選擇的原理，通過循環執行相同的、簡單的選擇、雜交和變異三種遺傳操作，並在適應度函數值的引導下對復雜的解空間進行有效地搜索，直到獲得最優的解。Therefore, based on the key project ? esearch on some basic problems on quality control and source tracing in modern manufacture ? ( no. 59735120 ) sponsored by national natural science foundation, a deep research is made in this dissertation its branch subject ? the theory and technology of zero - waste control. the main work and achievements are as follows : 1. on the basis of the introduction of common quality control methods, some key problems about statistical quality control are elaborately discussed ; a method to decide the quality control line is developed ; a mathematical model based on the sampling plan of multi - variation of product quality is set up ; the process manufacturing condition of quality control chart is discriminated using the theory of fuzzy diagnosis
為此，本文基於國家自然科學基金重點資助項目「現代製造質量控制、溯源若干基礎問題的研究」 （項目編號： 59375254 ） ，重點對其中的子課題? ?零廢品控制理論和技術進行了深入的研究。論文的主要工作和取得的成果如下： 1在介紹了常用質量控制方法的基礎上，對統計質量控制的幾個關鍵問題進行了詳盡的討論，提出了質量控制界限的確定方法，建立了基於產品質量多變異的抽樣方案的數學模型，利用模糊識別理論對質量控制圖工序加工狀況進行了判別。This fact was borne out by a poem the famous tang poet bai juyi wrote for the local people upon leaving hangzhou after his tenure as a local official had expired : " as i bid farewell to you all, i have have nothing but to leave behind a lake full of water in case you come across a year of crop failure.
西湖的時間美來自於杭州優越的區位及其亞熱帶氣候。這里四季分明，每季自然景觀各異，春花秋月，夏雨冬雪，各具特色。同時，朝暮晝夜的變化，賦于西湖各種光線色彩與雲霞煙靄的變化，使之更為迷人。They are collected from the fields or are cultivated indoors. the penjing captures the shape and style of weather - beaten old trees with their coiled roots and gnarled limbs
它的特點是千變萬化，各具異趣；或挺拔雄偉，蒼勁健茂；或古樸自然，清幽淡雅；或枝葉扶疏，風韻瀟灑；或果實累累，奇麗多姿。Landforms, soil, climate and characteristics of distribution in time and space in ningxia of draughts, disasters caused by wind and sand, floods and waterlodgging caused by hail, frost injury and earthquakes. the eighth chapter is on the relationships of environmental changing and the development of the agriculture and livestock husbandry in ningxia autonomous region which covers two sections : namely the historical processes of the human activities and the changing of the forests in ningxia, and the human activities and spreading of the deserts. the ninth chapter is a chapter that studies the regional divergence of the productivity level and the experiences and lessons of the development of agriculture and livestock husbandry
下篇是寧夏農牧業發展等因素與環境變遷的關系，這又包括三章：第七章是農牧業發展的自然條件，即地貌、土壤、氣候，以及歷史時期寧夏旱災、風沙災害、水澇災害、雹災、霜凍災害、地震災害的時空分佈特徵；第八章是寧夏農牧業發展等因素與環境變遷的關系，這包括人類活動與寧夏森林的變遷、人類活動與寧夏土地沙漠化的歷史演進兩部分；第九章是寧夏南、北農牧業生產力水平的地區差異及農牧業開發的經驗教訓。The abnormalities in the seasons and the weather, the rapid melting of the polar ice cap, the rising temperature of the oceans, the continuous expansion of the hole in the ozone layer, the acid rain given back to us by mother earth, sinking land masses and rising sea levels - what do all these reactions of the natural environment tell us that things turn for the worse when they reach the extreme seems not to be something which people take heed of
人類賴以生存的地球已是岌岌可危，生態環境在不斷的破壞下已產生了顯著的變化，四季氣溫異常北極冰巖急速溶化海水水溫高漲臭氧層的破洞繼續擴張大自然「還贈」給人們的酸雨陸地下陷海平面上升，這種種的自然界反應到底給了我們什麼啟示？物極必反的道理，似乎很難在人們心中起警惕的效應。" there may have been something about that particular season in terms of either natural variation in susceptibility patterns going on but also then potentially this low - level community transmission of variants with reduced susceptibility as well, ' ' he said
他說： 「也許是在特殊的季節，病毒的敏感譜發生了自然變異，或者敏感性降低的變異病毒株在社區內低水平地傳播。 」And they have not been studied taxonomically. as an attempt to study the taxonomy in cultivated species level of magnoliaceae, 20 various species were tested for rapd analysis. based on the rapd analysis and some morphological characters, the materials of yulania were divided into five groups : yulania, liliflore, biondii, sprengeri, and soulangeana group
2 、依據rapd聚類分析結果和形態學特徵，將玉蘭亞屬的種、自然變異類型和栽培品種進行了類群劃分，將20個供試材料分為白玉蘭類群、紫玉蘭類群、望春玉蘭類群、武當木蘭類群和二喬玉蘭類群。At first, in order to prevent the premature convergence of genetic algorithm effectively, the author brings forward a novel dyadic floating - point supplementary mutation operator. then, simulating the natural evolution, the author presents a novel topology, unoriented - connected topology, for parallel genetic algorithm. in the end, an interval decomposed optimization method is brought forward for ipga, which can improve the optimization performance of the algorithm
為提高演算法的性能，作者對遺傳演算法進行三種改進：首先，為克服遺傳演算法早熟收斂，作者提出一種新的二元浮點補碼變異運算元；其次，模擬生物自然進化模式，為并行遺傳演算法提出了一個新的并行拓撲結構- - - -無定向拓撲連接；最後，作者提出一種區間分解優化思想，來提高對最優解的搜索能力。The weird and suspicious act that chief editor tsang leung recently displays convinces ling of what fei says. ling pleads for the assistance of both fei and ma. with newspaper photographer kei chen also volunteering to help, the quartet embanks on a journey to track down the truth
玲半信半疑，而總編輯曾理時梁家輝的行徑突然變得怪異，她不禁相信的說話，並請他相助，一直暗戀玲的攝影記者基仔陳冠希也自動請纓，於是四人一起追尋真相。The most before all others in this part by analyzing natural changes condition of the shandong total population, the change of population age composition type, development of population age pyramid and old age at age to foster the detailed analysis of coefficient change, and unfolds before one ' s eyes a course of aging development of shandong population, then four protruding characteristics of aging development of shandong population are summed up out on this foundation : population aging speed is fast ; district difference is clear, urban and rural difference is notable ; the population age structure in " gold particular period " of population and at the initial stage of population aging
然後分析了世界和中國人口老齡化的發展特點及趨勢，為後文對山東省人口老齡化的分析奠定理論和實踐基礎。第二部分：山東省人口老齡化進程分析。此部分中首先通過對山東省總人口自然變動、人口年齡構成類型變化、人口年齡金字塔演變和老年撫養系數變化的詳細分析，展現出山東省人口老齡化發展的過程，在此基礎上總結出山東省人口老齡化發展的四個突出特點：老齡化速度快；地區差異明顯；城鄉差異顯著；正處於人口老齡化初期和人口年齡結構的「黃金時期」 。" so naturally divergent cats were found and then bred so there is really no modification of the gene.
「所以我們找出這些有自然差異的貓，再用他們繁殖後代。這不是人為地轉變基因。 」分享友人