落重系數 的英文怎麼說
中文拼音 [làzhòngxìshǔ]
落重系數
英文
drop-weight factor-
A variety of methods including the tabular comparison of data, the tabular comparison of similarity coefficient, the nearest neighbor method and the group - average method of hierarchical agglomerative classification were applied to investigate the forest communities in meizi lake area
森林植被樣地中以喬木層樹種的重要值為指標，採用紙條排隊法、群落相似系數分類法、最近鄰體法、組平均法對梅子湖森林植被樣地進行數量分類。The various colours significant of various degrees of vitality white, yellow, crimson, vermilion, cinnabar : their degrees of brilliancy : their magnitudes revealed up to and including the 7th : their positions : the waggoner s star : walsingham way : the chariot of david : the annular cinctures of saturn : the condensation of spiral nebulae into suns : the interdependent gyrations of double suns : the independent synchronous discoveries of galileo, simon marius, piazzi, le verrier, herschel, galle : the systematisations attempted by bode and kepler of cubes of distances and squares of times of revolution : the almost infinite compressibility of hirsute comets and their vast elliptical egressive and reentrant orbits from perihelion to aphelion : the sidereal origin of meteoric stones : the libyan floods on mars about the period of the birth of the younger astroscopist : the annual recurrence of meteoric showers about the period of the feast of s. lawrence martyr, 10 august : the monthly recurrence known as the new moon with the old moon in her arms : the posited influence of celestial on human bodies : the appearance of a star 1st magnitude of exceeding brilliancy dominating by night and day a new luminous sun generated by the collision and amalgamation in incandescence of two nonluminous exsuns about the period of the birth of william shakespeare over delta in the recumbent neversetting constellation of cassiopeia and of a star 2nd magnitude of similar origin but lesser brilliancy which had appeared in and disappeared from the constellation of the corona septentrionalis about the period of the birth of leopold bloom and of other stars of presumably similar origin which had effectively or presumably appeared in and disappeared from the constellation of andromeda about the period of the birth of stephen dedalus, and in and from the constellation of auriga some years after the birth and death of rudolph bloom, junior, and in and from other constellations some years before or after the birth or death of other persons : the attendant phenomena of eclipses, solar and lunar, from immersion to emersion, abatement of wind, transit of shadow, taciturnity of winged creatures, emergence of nocturnal or crepuscular animals, persistence of infernal light, obscurity of terrestrial waters, pallor of human beings
顯示出不同程度之生命力的繽紛色彩白淺黃深紅朱紅銀朱諸星之亮度一直包括到七等星以等級標志的諸星之大小諸星的位置御夫座沃爾辛厄姆路172大衛的戰車173土星光環螺旋星雲凝固后形成有衛星的恆星群兩重大陽相互依存的旋轉運動伽利略西蒙馬里烏斯174皮亞175勒威耶赫歇耳加勒176等人各自獨立地同時所做的發現波得和開普勒所嘗試的距離的立方與回轉次數的平方的體系化177多毛的眾彗星178那幾殆無限的被壓縮性，以及自近日點至遠日點那廣漠的遠心的重返大氣層的橢圓軌道隕石的恆星之起源年紀較輕的天體觀測者誕生的那個時期火星上所出現的「暗波」現象179每年在聖勞倫斯節殉教者，八月十日前後降落的隕石雨每月都發生的所謂「新月抱舊月」現象180關于天體對人體的影響的假定威廉莎士比亞出生的時期，在斜倚卻永不沒落的仙后座那三角形上端，一顆不分晝夜散發著極亮光彩的星辰一等星出現了181這是兩個無光死滅了的太陽因相撞並汞合為白熱體而形成的燦爛的新太陽大約在利奧波德布盧姆出生時，出現在七星花冠星座里而後又消失了的一顆同一起源亮度卻稍遜的星宿二等星182還有約於斯蒂芬迪達勒斯出生時，出現在仙女座中之後又消失，小魯道爾夫布盧姆出生與夭折數年後出現于御夫座后又消失，以及另外一些人出生或去世前前後後出現在許許多多其他星座中而又消失了的假定是同一起源的實際存在或假定存在的星斗183 。From the aspect of area distribution, problem of water environment and factors of population, society and economy do n ' t coordinate with each other : in those areas which are rich in water, there are serious pollution and waste ; in those which are lack of water, economy is relatively behind the times ; in those where there is less lack of water, high population density faces the water resource with great potential pressure
水環境問題與人口、社會、經濟等因素在地區分佈上很不協調，如水資源豐富地區，水污染與水浪費十分嚴重；缺水地區，經濟相對落後；缺水程度低的地區，人口密度較高，使水資源存在巨大的潛在壓力。在影響水環境的相關因素中，人口因素的作用十分突出，主要表現在兩個方面：一是地區人口數量與分佈的集中程度是決定水資源壓力及相關水環境問題的真下因素；二是人口素質與水管理水平之間具有一定的正相關關系。Secondly, through systematic analysis of the grade - scale structure, functional structure and spatial structure of the urban and towns in tianshui city, the conclusion is drawn in the paper that the problems of urban and towns system is as follows : unreasonable structure, smaller scale and relatively less in number of urban and towns. then it offers the convinc ing proof of establishing a new urban and towns system. thirdly, based on the analysis above, the paper puts forward the corresponding countermeasures to enhance the development of the urban and towns system, including strengthening the function of tianshui city as a central city, reasonably developing small cities such as qin ' an county, gangu county and wushan county, enhancing the constructed level of critical villages and towns, developing ordinary villages and towns and harmony their development in the whole
本文在對天水城鎮體系范圍確定的基礎上，以多種區域及城市發展理論為指導，首先對天水城鎮體系的歷史形成過程、區域基礎和經濟發展現狀進行了全面總結；其次，系統分析了天水城鎮體系的等級規模結構，職能結構和空間結構，得出天水城鎮體系目前存在的問題是：結構不合理，城鎮規模小，數量少，從而為天水城鎮體系的構建提供依據；再次，根據前文分析結果，提出了天水城鎮體系發展的對策：強化中心城市天水市的功能，合理發展縣級小城市，如秦安縣、甘谷縣、武山縣等；大力提高重點鄉鎮的建設水平，積極發展一般鄉鎮，並促使各級城鎮協調發展；最後本文提出了為落實天水城鎮體系發展的保障措施。The basic idea of this method is to produce particles from the posterior densities, and these weighted samples provide approximations to the densities. in this dissertation, sequential monte carlo method and its applications in communication are investigated. firstly, its basic idea, method and improved method are introduced, then induce the bound of particles, which determines the performance of the system, and the more particles are chosen, the higher computation is done, finally, a new detector based on new importance function is proposed, which deals with the joint channel estimation and detection in flat fading channels
首先介紹了它的基本思想、基本方法、及當前研究現狀；在此基礎上推導出樣本數選擇的界，樣本數的選擇決定了系統的性能，但是若選的太多，計算復雜度也會隨之增大，因而給出這個界是十分有意義的；最後提出了一種基於新的重要函數的檢測器用來解決平坦衰落通道下的聯合通道估計和檢測問題，並通過模擬證明了我們提出的新檢測器的有效性。The work on seasonal dynamics of litter input and decomposition and the relationship between them and environmental factors was studied through the method of harvest and weight loss. soil respiration rate was measured by alkali - absorption method and the contribution from soil microorganism respiration and from root respiration was determined through trendline method of linear regression between soil respiration rate and belowground biomass. mathematical models were established between the seasonal dynamics of main components of soil total respiration including soil respiration, root respiration, soil microorganism respiration, litter respiration and environmental factors
應用收獲法和重量損失法對枯枝落葉輸入與分解的季節動態及其與環境因子的關系進行了研究；應用靜態氣室法測定了土壤總呼吸和凋落物呼吸，應用土壤呼吸量與地下生物量線性回歸趨勢線法測定了土壤微生物呼吸及根呼吸的貢獻量，運用相關分析法建立了土壤總呼吸、根呼吸、土壤微生物呼吸及其凋落物呼吸季節動態與環境因子之間的數學模型；應用灰色分析比較了兩群落土壤呼吸季節動態產生差異的原因；應用干重換演算法對土壤微生物能量積累量的季節動態進行了測定，建立了土壤微生物能量積累量與環境因子的數學模型；應用系統分析方法，利用分室模型，對兩群落枯枝落葉與微生物之間的能量流動進行了定量測定和穩定性分析。In allusion to the coning motion of parachute systems in steady decent, the impact of several factors upon the motion forms of the system are discussed, and the influence of the different aerodynamic parameters on the system ’ s coning motion are analyzed significantly. on the base of these, theoretical formulae of the system ’ s steady coning motion are deduced to validate the model ’ s correctness
針對降落傘系統在穩定下降過程中的錐擺現象，討論各種因素對系統運動形式的影響，著重分析了不同的氣動參數對系統錐擺運動的影響，在此基礎上推導出系統穩定錐擺運動的理論公式，驗證模型的正確性。As the step of the color tv ( the second generation ) to the digital tv ( the third generation ) is larger and larger, the research of digital television terrestrial broadcasting ( dttb ) become more and more important in china, we are concentrating on the standard of dttb which is suit for our country after describing and analyzing the technical stipulation and speciality of dttb, this paper compares atsc 8 - vsb with dvb - t cofdm and isdb - t bst - ofdmo the emphasis of this article lies in the technical solution about transferring system, channel coding is important component of dttb, which can resist from the bad circumstances o because of lots of varieties and different performance, channel coding become one of the emphasis of the research work this paper analyzes and researches the theory and performance of the different channel coding particularly, points out an effective theoretic analysis method and computer demo of performance comparison a theoretical method for estimating the performance of concatenated codes is proposed in this paperc this is achieved by combining the performance of single level coding rayleigh fading channel and the character of channel modulation it may be useful to research and development of the future digital television terrestrial broadcasting standard of our country
通道糾錯編碼是數字電視地面廣播傳輸系統的重要組成部分，是抵禦地面惡劣環境的有效手段。由於通道編碼的種類繁多，性能各異，因此是目前研究工作的重點之一。本文詳細分析和研究了幾種通道糾錯編碼的原理和性能，並針對外碼內碼級聯糾錯結合地面通道瑞利衰落提出了一種有效的理論分析方法和性能的計算機比較演示方案，總結了不同級聯方案的性能特點，對於我國目前的數字電視地面廣播標準的研究和通道級聯糾錯方案的確立及其參數選擇具有一定的參考價值。Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants
文摘:生物入侵是不均衡世界的一個永恆話題，尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的，但另外一些則有著嚴重的後果，會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式，概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑，來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結，這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化（瓶頸效應及種群擴張） .最後，我們以歐洲櫟癭蜂（膜翅目，癭蜂科，癭蜂族）一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上，多態的等位酶位點上等位基因頻率的數據表明: 1 ）遺傳多樣性沿入侵路線呈不斷下降的趨勢，支持了冰河期避難所作為遺傳多樣性中心的作用; 2 ）入侵地區的種群與該物種原產地的種群相比，遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映The great mass of sugar - refinery boilers are still using simple instrument and in handwork. so the automation level is lower. according to the present states of the automatic control burning systems of sugar - refinery boiler in our country, this paper especially studies automatic control systems of boiler burning
目前，我國糖廠鍋爐的設備比較落後，大多數鍋爐的控制、操作水平基本上停留在手工和簡單儀表操作，自動化水平較低，根據糖廠鍋爐自動控制的現狀，本論文著重研究了糖廠鍋爐的燃燒自動控制系統。In chapter 2, we analyzed the effect of the driving field phase fluctuation on the gain and dispersion and population differences in an open v - type three - level non - inversion lasing system and then discussed the effects of the incoherent pumping rate, the ratio of the atomic injection rates, the atomic exit rate, the rabi frequency of the probe and driving fields and their corresponding detuning on the gain, dispersion and population differences of the system, and got some important conclusions different from those in closed or other open systems
第二章討論了驅動場的相位漲落對開放的v型三能級無反轉激光系統的影響，根據解析解的數值計算結果討論了非相干泵浦速率、粒子注入速率之比、粒子退出速率、探測場和驅動場的rabi頻率和相應失諧對系統增益、色散和粒子數差的影響，得到了一些不同於封閉的v型系統及其他開放的無反轉激光系統的重要結論。One of the important prerequisites for nn to approximate the nonlinear function f ( x ) is the states x of the system should be in a compact set. therefore, the unkown unlinear systems can be expressed by nn and a model error e ( x ), and there exists a positive constant 6 such that e ( x ) < 8. so the problem can be incorporated into robust adaptive control
神經網路可以逼近非線性函數f （ x ）的一個重要前提是x必須落入某一緊集s中，因此在一緊集u上，未知的非線性系統就可以用神經網路及一建模誤差項（ x ）表示出來，且存在一正的常數，使得（ x ） ，從而這一問題可以歸結到魯棒自適應控制中。From the data collected by lightning location system, we can find that chongqing is strong - lightning - day and has about 95 lightning days per year and has 7. 022 hours per lighting day. in addition to the ground flashing density is 0. 1216 / km2 ? d and beyond the value of rules. so according as the fact of chongqing power system ， the paper will investigates the 110kv power transmission line because lightning often stroked the line last years
重慶雷電定位系統運行兩年多來採集到的數據分析研究結果表明重慶應屬于強雷區，年雷電日數在95左右，平均每個雷電日中有7 . 022雷電小時，而地面落雷密度平均值為0 . 1216次/ km2 ? d ，比規程規定值高出一個數量級。On the basis of drawing the domestic and international achievement in research of luc and human driving forces extensively and referring to different economic development levels in chongqing, this study chooses beibei, wanzhou, youyang as the sample areas, which respectively represent for relatively developed district, less developed district, undeveloped district. this paper takes the data and relevant materials of the period from 1985 to 2000 as foundation, takes the on - site inspection as ground, takes sustainable land resource use theory and systematic dynamics theory as guide, takes many kinds of qualitative and quantitative approaches as methods
本研究在廣泛吸取國內外相關土地利用變化及其人類驅動力研究成果的基礎上，結合重慶不同區域經濟發展水平情況，選取了經濟較發達的北碚區、欠發達的萬州區、落後的酉陽縣為研究樣點，以1985年2000年時段的土地利用數據及相關資料為研究基礎，實地調查為依據；以土地資源可持續利用理論、系統動力學理論為指導，採用定性與定量相結合的多種研究方法進行研究。6. since the monitor precision of quasi - dynamic calibration system is very important, the model of the four channel electric pressure - measuring system in frequency domain is built up. the cause of variance is analyzed. the error function of the system is defined and the formula of correcting the system error is derived
6由於落錘液壓動標裝置校準系統的校準壓力監測精度極為重要，本文對四路電測壓力系統進行頻域建模，分析了產生不一致的原因，定義了系統的誤差函數及推導了統一誤差模型的修正公式。Based on analysis of the characteristic of the tourist urban environments, this paper pertinently proposed an inexact fuzzy multi - objective system programming and optimizing method. it is the first time that the inexact fuzzy multi - objective planning method is applied in the field of tourist urban environmental planning. and then, an inexact fuzzy multi - objective system programming and optimizing model for the tourist urban environment is also constituted. this model is not only integrated the kinds of environmental factors and economic factors, but also given full consideration to the uncertainty of the tourist urban environmental development. through the interactive process between man and computer, the ideas and knowledge of experts and decision - makers are combined with the model. so the scientific nature and practicability of the planning results are guaranteed
簡要分析了旅遊城市環境規劃的特點，針對性地提出了一套不確定性模糊多目標旅遊環境系統規劃優化方法，這是首次將不確定性多目標規劃方法應用於以旅遊業發展為重點的城市環境規劃領域。並相應地建立了旅遊城市環境不確定性模糊多目標系統規劃優化模型ifmopomtue ，既把各種環境要素和經濟要素有機地整合入模型中，又充分考慮了旅遊城市環境發展的不確定性，通過人機互動式方法，將專家和決策者的意見落實在模型參數上，從而最大可能地保證了規劃結果的科學性和可操作性。In one side, the study may make the simulating model of climatology and land - biosphere more perfect, in the other side, the study will help to discover the real action of vegetation in the global carbon circle, which gives the more scientific method to estimate accurately biomass and net primary production ( npp ) of ecosystem and how much carbon in atmosphere absorbed by vegetation, to predict the possible impact of global climate change on terrestrial ecosystems, and to make scientific strategies for the global change
一方面可以為進一步建立更完善的模擬氣候與陸地生物圈之間關系的數值模式奠定基礎，另一方面可為探索植被在全球碳循環中的具體作用，正確地評估和預測全球氣候變化對生態環境的可能影響，制定相應的政策提供科學依據。本文以寒溫帶落葉針葉林區為重點來進行試驗模擬，研究植被對氣候強迫響應的有效途徑。There were 83 species in the community 4 ( castanopsis sclerophylla - camellia oleifera - maesa japonica community ), and castanopsis sclerophylla, castanopsis fargesii and schima superba were the dominant species of tree layer, and camellia oleifera, itea chinensis and symplocos sumuntia were the dominant species of succession layer, and maesa japonica was the absolute dominant species of regeneration layer. there were 76 species in the community 5 ( castano
用物種重要值代替物種多度來測定物種多樣性，結果表明: margalef豐富度指數隨著群落層次的物種數增加而增加，與群落各層次的個體數無關，各群落的喬木層的simpson多樣性、 shannon一wiener多樣性、 simpson均勻度、 shannon一wiener均勻度4個指數一般小於其演替層的相應指數，演替層與更新層的相應指數之間無必然大小關系。It requires us to learn the theory of national economy, confirm the station that it should has ; sum up the historical experiences of the development of national economy, exert the importance that the national economy could n ' t substitute ; acknowledge the unbalance of the development of different regional economy and society, try our best to make the dominated minorities have the equal developmental right of economy with other advanced countries ; research and constitute special preferential policies and ways that are befitted the fast development of national economy, change the lagging economic modes which dealt in the traditional market into the socialist market economic mechanism which has vital force and livingness
要求我們正確地認識民族經濟理論，確立民族經濟應有的地位;總結民族經濟發展的歷史經驗，發揮民族經濟不可替代的重要作用;承認地區間經濟和社會發展的不平衡性，努力使轄區內的少數民族享有與其他先進民族在經濟上的平等發展權;研究制定特殊優惠政策，適宜民族經濟快速發展的方式方法，盡快從傳統的「茶馬互市」式的落後的經濟發展模式轉變到具有生機活力的社會主義市場經濟體系中來。However consistent with point 1. 4 the risk of a dangerous fall on an existing climb may not necessarily justify retro - bolting the climb
然而墜落系數為1 . 4時的危險墜落風險，未必足以作為重修既有路線的考量。分享友人