選擇因數 的英文怎麼說

中文拼音 [xuǎnzháiyīnshǔ]
選擇因數 英文
selectivity factor
  • 選 : Ⅰ動詞1. （挑選） select; choose; pick 2. （選舉） elect Ⅱ名詞（挑選出來編在一起的作品） selections; anthology
  • 擇 : 擇動詞（挑選） select; pick; choose
  • 因 : Ⅰ動詞[書面語] （沿襲） follow; carry on Ⅱ介詞1 [書面語] （憑借; 根據） on the basis of; in accord...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 選擇 : select; choose; opt; election; choice; culling; alternative
  1. In this paper, ackerman steering linkage of double - wishbone suspension is taken as the study object, choosing the splitting joint and steering lever joint to carry out the design of optimization the mathematics models are established based on the multi - body system dynamics, applying its analysis method of kinematics to study the mechanism kinetic principles owing to more spatial factors considered, and calling off many hypotheses affecting the accuracy, compared with the traditional methods, the models are better to reflect the realistic motion principles, the results are more exact and applicable moreover, the force analysis is applied to the conduct mechanism the analysis method of dynamics in the multi - body dynamics is applied to study the forces applied on every component, working out the constraint reaction force of up and down ball joints, and developing the current computation program in the end, produce the upper wishbone geometry model in the ansys software package, meshing and carrying out the fea, testifying if the intensity of the wishbone meet with the requirements

    本文以雙橫臂獨立懸架的轉向傳動機構作為研究對象，選擇對斷開點和節臂球銷的位置進行優化設計，在此基礎上建立了基於多體系統動力學的導向機構和轉向傳動機構的數學模型，運用該學科的運動學分析方法研究機構的運動規律，編制了通用優化設計軟體。由於考慮了更多的空間因素，取消許多影響準確性的假設，因此建立的數學模型與傳統的方法相比更能反映實際運動規律，得到的優化結果也更加精確實用。此外，本文還針對導向機構進行受力分析，在建立該機構的空間動力學模型后，運用多體動力學中的動力學分析方法研究各個桿件的受力，計算出上下球鉸的約束反力，並開發出了相應的通用計算程序。
  2. They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem

    本研究以重慶市的南川金佛山（自然保護區） 、黔江武陵山（國家重點退耕還林示範縣，森林覆蓋率50以上）和北碚中梁山（遭人為破壞嚴重）典型巖溶區為對象，選擇了幾種重要的利用方式，包括林地、果園、耕地、棄耕地和灌草坡，採用野外巖溶生態調查和室內試驗測量分析相結合的方法，以不同土地利用方式巖溶土壤肥力為重點，對不同土地利用方式土壤肥力特徵進行量化分析，找出巖溶土壤肥力差異的主要方面及其根本原因，論文主要從土壤剖面物理退化指標（有效土層厚度、有機質層厚度、質地、團聚體、水分含量等） ，化學肥力退化指標（有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等） ，樣地土壤微生物指標（細菌、真菌、放線菌數量及總量）以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究，為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。
  3. By optimizing the parameters such as the additive quantity of corn straw fibre, the content of amylum, the dosage of vesicant, the selecting of accessorial material, and the temperature of frothing, the cushion packaging material that has decompounding capability was prepared, and the factors influencing the mechanical strength of this material was analyzed by the method of static compress test

    通過對玉米秸稈纖維添加量、澱粉含量、發泡劑用量、輔料選擇、發泡溫度等參數的優化，實驗制備了具有可降解性能的緩沖包裝材料，並利用靜態壓縮實驗方法對該材料力學強度的影響因素進行了分析。
  4. If the velocity of atoms is near to zero, the light for ces will tend to confine the atoms near to nodes and antinodes. the stability depends on the magnitude of the negative slope of the light force, the depth of the potential well and the momentum diffusion coefficient. it is important to select the parameters, e. g

    如果通過激光冷卻能使原子速度降至很小甚至為零，光壓力的作用將使原子被較穩定地囚禁于激光駐波場的節點和反節點處，其穩定程度取決于該處光壓力曲線負斜率的大小、對應勢能的勢阱深度以及動量擴散系數的大小，因此，如何在實驗中合理選擇激光強度、失諧量等顯得尤為關鍵。
  5. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  6. The language of the novel is distinct and vivid, and especially the color words, of which the abb style words are used most strikingly in large quantities, and have distinguishing features because the authoress employed a visual angle of a little girl and painting techniques in her expression

    這些詞語因作者使用小女孩視角，並具備一定的繪畫知識與技能及表達的需要而呈現出使用數量多、個性特色鮮明與" bb "后綴選擇精確等特點。
  7. These confirmed the successful transformation of the a78 - 3 and a78 - 4 on selection medium containing basta. microarray on membranes were fabricated from a set of 384 pinus taeda genes ( cdnas ) related to lignin synthesis, adaptation or primary metabolism for examination of gene expression in the sublines. the results showed : ( 1 ) the correlation coefficients between the transgenic sublines a78 - 3 and a78 - 4 and the untransformed control a95 : 88 : 22 were 0. 8028 - 0. 9028, while those of a78 - 5 are 0. 8897 - 0. 9302

    選擇384個與木質素生物合成及植物生理代謝和環境適應性有關的基因或cdna片段構建尼龍晶元膜，並對轉基因細胞亞系a78 - 3 、 a78 - 4和a78 - 5和對照亞系a95 ： 88 ： 22等培養再生植株進行基因表達的微陣列檢測，結果表明： （ 1 ）三個亞系與對照之間的pearson相關系數分別為0 . 8607 、 0 . 7975和0 . 9630 。
  8. While most 2. 0 - compatible drives are backwardly compatible with 1. 1, it is generally advisable to avoid using 1. 1 unless there is no other option due to its slow speed

    雖然大多數兼容2 . 0的驅動器都可向後兼容1 . 1 ，但是一般最好避免使用1 . 1 ，除非別無選擇（因為它的速度比較慢） 。
  9. On account of the uncertainty existing in the nonlinear ship responded model, we design a dynamic adaptive ship steering controller by using adaptive backstepping. after deducing the update law of the unknown constant, we choose the controller gains to guarantee the closed loop system and the control signal global boundedness

    由於船舶非線性響應模型中含有未知常參數的不確定項，因此採用自適應backstepping的方法，選擇參數自適應調節律，設計動態的船舶航向控制器，實現在線控制。
  10. It demonstrates : the selection of magnifying multiple and measuring size are different to material structure, and the measured result is greatly influenced

    研究表明：放大倍數和測量碼尺的選擇因材料結構而異，對測量結果影響很大。
  11. Multiple comparison method and similarity coefficient method were developed to estimate population size of the giant panda. the chi - square testing was used to determine the relationship between the occurrence of pandas and the type and intensity of human disturbance. habitat selection of the giant panda and impacts of human disturbance, such as logging, livestock grazing, herb collecting, poaching, road building, were quantitatively analysed by habitat selection index of manly

    同時還利用manly （ 1993 ）的選擇指數（ selectionindex ） ，定量分析王朗大熊貓對生物和非生物生境因子的選擇，特別是分析如採伐、放牧、采藥、偷獵、修路等人類干擾對大熊貓及其生境的影響，從而為保護區大熊貓的管理提供依據，將造成大熊貓瀕危的人類干擾降至最低。
  12. Serialization is a bad choice for storing enterprise data because

    對存儲企業數據而言，序列化是一個錯誤選擇，因為：
  13. Especially, when the isocline of x is monotone decreasing in 0 < x < 1, the svstem has no limit cycle and is globally stable ; next, we construct a saddle bifurcation at the boundary equilibrium and a degenerated bogdanov - takens bifurcation at the interior equilibrium by choosing appropriate parameter values in the following two sections, where our work are based on the theory of central manifolds and normal torms. we prove that is a codimention 3 focus - type equilibrium. system ( 6. 1 ) will have two limit cycles at some appropriate bifurcation parameter values, and have homoclinic or double - homoclinic orbits at some other appropriate bifurcation parameter values ; at last, we study the qualitative properties of the system at infinite in the poincare sphere

    因為系統在（ 0 ， 0 ）點處沒有定義，這給研究其在（ 0 ， 0 ）附近的動力學性質帶來了困難，我們應用文獻[ 17 ]中關于研究非線性方程奇點的系列理論和方法，圓滿解決了這一問題，給出了第一象限內當t +或t -時，在全參數狀態下系統的軌線趨于（ 0 ， 0 ）點的所有可能情況，其相圖也得以描繪；並且，系統不存在極限環的幾個充分條件我們也予以列出，當x的等傾線在0 x 1范圍內遞減時，系統不存在極限環，全局漸近穩定；然後，我們以中心流形定理和正規型方法為主要工具，巧妙選擇參數，分別構造了一個余維2的鞍點分岔和一個余維3退化bogdanov - takens分岔，證明了平衡點是余維3的焦點型平衡點，存在參數， m ，的值使得系統（ 6 . 1 ）有兩個極限環，還存在參數， m ，的另外值使得系統（ 6 . 1 ）有同宿軌或雙同宿軌。
  14. This, however, is a very time - intensive option, as it requires you to reinstall your existing os on the new drive, reinstall and reconfigure all of your applications, and restore all of your data

    不過，這是一個花費時間的選擇，因為它需要您在新的驅動器上重新安裝現有os系統，重新安裝和重新配置所有應用程序及還原所有數據。
  15. Hainan island offers a number of course options so we re still working to finalize the race course

    海南島上可以有數個賽程選擇，因此我們仍未決定最終的賽程方案。
  16. Recently, date mining technology based on web has abstract the interest of many researchers. possession of lower data is the precondition of mining higher knowledge, and net information retrieval technique has become the urgent issue of date mining technology based on web, so the paper explore the research of it and focus on the information retrieval based on web. with the expectation of a intelligent information retrieval system, which can catch the interests of customers with good precision and capability, we give deep research to some of the information retrieval technique

    近幾年來， web數據挖掘技術引起了研究人員的關注，低層信息的佔有是發掘高層知識的前提，網路信息檢索技術便成為目前web數據挖掘的一個迫切需要深入研究的問題，因此，本文選擇web數據挖掘作為研究對象，重點研究的是基於web的信息檢索技術，對其中的一些相關內容進行了深入研究，旨在研究設計一種性能較好、能捕捉用戶興趣、提高精度的智能信息檢索系統，更好的滿足用戶的需要。
  17. Naturally, no one can check out every option, but maximizers strive toward that goal, and so making a decision becomes increasingly daunting as the number of choices rises

    當然，沒有人能夠一一查看所有的產品，但極大化者會為了這個理想而奮斗，也因此當可供選擇的數量提高時，要下決定就變得越來越困難。
  18. There is especial systematic background to build up small towns in china. it cannot help but choose small towns " building - up under the condition that planned economic system makes deviation of economic structure of industrialization advancing urbanization, the large number of labor in countryside, and the chance of job is lack in cities. so the systemic barriers in small towns " building - up is the inertia effect of planned economic system

    我國小城鎮建設具有特殊的體制背景，它是為了矯正計劃經濟體制下形成的「工業化超前、城鎮化滯后」的經濟結構偏差和解決我國農村勞動力數量巨大、大中城市就業需求不足而提出的，是提高我國城鎮化水平必然而無奈的選擇，因而小城鎮建設的體制性障礙是計劃經濟體制的體制慣性作用，具有政策剛性、交叉性綜合性和動態性等特徵。
  19. Bringing into play the restricting function of encouragement, we can offer ruling on deposit stability. to achieve this, a scheme that governs deposit stability can be established by using complete and proper system and mechanism. 1

    由於制度作為外生變量能夠影響存款事件當事人的效用選擇函數，因此可以發揮激勵約束作用，對存款關系提供治理，運用全面的、適度的制度體系可以建立存款穩定性綜合治理機制。
  20. Some key steps of the evaluation system was discussed including establishment of index system, selection of subordinate degree function, distribution of index weights and evaluation techniques for secondary level fuzzy evaluation, which can make the established system more scientific and objective

    文章就模糊綜合評價體系中評價指標體系的建立、隸屬度函數選擇、因子權重分配方法以及二級評判方法等幾個關鍵環節和步驟作了初步探討，以期所建立的評價體系更科學、更客觀。
分享友人
分享到 Line

分享到臉書