比例限界 的英文怎麼說

中文拼音 [xiànjiè]
比例限界 英文
limit of proportionality
  • : Ⅰ動詞1 (比較; 較量高下、 長短、距離、好壞等) compare; compete; contrast; match; emulate 2 (比...
  • : Ⅰ名詞(指定的范圍; 限度) limit; bounds Ⅱ動詞(指定范圍, 不許超過) set a limit; limit; restrict
  • : 名詞1 (相交的地方; 劃分的界限) boundary 2 (一定的范圍) scope; extent 3 (按職業、工作或性別等...
  • 比例 : 1. (長度上縮小和放大的倍數) scale; scaling 2. (比率) proportion; ratio; proportionality
  • 限界 : bound
  1. We compare the approximation of an analytic function f by its taylor polynomial and its poisson partial sum with the same number of terms and illustrate that for functions with limit zero at infinity and for bounded functions the poisson expansion provides a better approximation to the function than the taylor expansion

    在第三章中,介紹了rb曲線與poisson曲線的概念以及基本的幾何性質,指出了poisson基函數與有理bernstein基函數之間存在的關系,並且將解析函數的taylor逼近與poisson逼近進行較。實表明,對于在無窮遠處極為0的函數以及有函數, poisson逼近taylor逼近效果要好。
  2. Plant endemism is the key problem in floristic study. analysis of endemism in a flora has significant implications in demonstrating floristic richness and diversity, the relationship between plants and their environment, and also in conserving biodiversity of the flora. in view of the situation that most of the past studies on endemism were qualitative, this study is the first tentative approach to the introduction of quantitative indices to the analysis of floristic endemism, with an purpose to push the study of endemism from qualitative to quantitative. four quantitative indices are introduced, i. e. level of endemism ( l ), coefficient of endemism ( c ), degree of endemism ( d ) and general index of endemism ( a ). mathematical formulae have been given to each of the above indices and explanations for them have been presented, and the scope of their use in floristic studies has been delimited and exemplified in this paper. the result shows that they are of good applicability. the proposed indices embody full information of plant systematics and plant geography. with the aid of qualitative analysis, the application of the proposed indices will improve the comparability and precision of endemism study in floristics

    過去有關特有現象的研究主要於定性的分析,可性和精確性較差.該文嘗試引入特有現象的定量化指標,以推動特有現象的分析研究從定性水平向定量水平邁進.所引入的4種定量化指標分別是:特有水平、特有系數、特有度以及特有綜合指數.對每種量化指標都給出了數學表達式,說明了其區系學意義,證和定了這些指標在植物區系分析中的應用,結果表明,它們有良好的適用性.這些指標充分地包含了植物系統學和植物區系學的信息.結合定性分析,這些指標的應用將增強植物區系研究的可性,使植物區系特有現象的分析達到更精確的水平
  3. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩( weno )格式及其在雙曲守恆律方程中的應用,在此基礎上作了兩個方面的工作:一是針對高頻聲波問題構造出一種基於保色散關系( drp )的weno有差分格式,並對計算氣動聲學( caa )問題的代表性算進行了大量數值實驗,較了該格式捕捉波數的能力;另外,針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題,研究了利用面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法,並且給出有代表性的密度滑移面問題的算,得到一致高階精度的數值模擬結果。
  4. These examples are used for the test of zhongtian erp. because of the limit of length, it only introduces some key function modules

    物料需求計劃子系統較復雜,運行面多,於篇幅,該章只是對其中的部分運行面作為實進行簡單介紹。
  5. According to the comparison result, the variance analysis will not be applicable when the allowance range has to be set flexibly according to specific operation requirements although it can achieve a high rate of fault detection. for example, when the allowance range of some particular component gets bigger, the variance analysis could not precisely define the new judgment boundary

    較后發現,方差特徵分析法雖然可以達到很高的故障檢測率,但不適用於元件容差需根據具體要求靈活設定的情況,如當具體情況中某個元件的容差范圍變大時,用方差分析法卻不能準確地定出新的判斷
  6. This paper try to mix the finite strip method and hybrid stress element, and deduce a numerical and computer method which combines the advantages of the two methods - mixed hybrid finite strip method ; analyze the intensity and stability of the orthotropic plate by this method ; deduce the formula of the orthotropic plate ' s analysis and calculation under this method ; compile the program of orthotropic plate ' s mixed hybrid finite strip method ( hfsop. for ) with fortran - 77 language, and perform them under fortran90 environment of pc computer ; comparing with traditional methods by example of computing, prove that the mixed hybrid finite strip method have better degree of accuracy, moderating the stiffness of plate, coming more close to actual conditions, avoiding over - hard or over - soft ; finally, this paper analyze the stability of a orthotropic plate by this method, and deduce the - value of critical stress

    論文將有條法和應力雜交元法兩者結合起來,導出一種兼有兩者優點的數值計算方法? ?混合雜交有條法。運用這種方法對正交異性板的強度和穩定進行了分析,推導出正交異性板在這種方法下的分析計算公式,用fortran - 77語言編寫正交異性板混合雜交有條法程序( hfsop . for )在微機fortran90環境下運行。通過算與傳統的方法較,驗證混合雜交有條法有更好的精度,使板的剛度適中,更接近實際情況,避免「過硬」或「過軟」 ;最後,論文還用此方法對一正交異性板進行了穩定分析,得出臨應力值。
  7. Abstract : in this paper, first fe simulation algorithms for contact search, contact constraint, and the calculation of contact and friction loads were established based on the analysis for contact friction problem in sheet metal forming. then the fe simulation model for contact friction problem in sheet metal forming was set up. at last, the efficiency & amp; stability of this model was proved to be satisfactory by the comparing numerical example and experiment results of skin stretch forming

    文摘:本文在分析了板料成形過程接觸摩擦問題特點的基礎上,提出了接觸搜索、面滑動約束、法向接觸力以及摩擦力計算等問題的有元模擬演算法,建立了板料成形過程接觸摩擦問題的有元模擬模型,最後通過數值算與飛機蒙皮拉形模擬試驗結果的較,驗證了此模型計算精度及數值穩定性良好。
  8. ( c ) land natural productivity increase from 7843 kg / ( hm2 - a ) to 17335 kg / ( hm2 - a ) relate to altitude closely, and the mean rate of enhancing yield is 23. 53 percent in this region with annual enhancing - rate of 0. 64 percent in last 15 years. ( d ) there are many facters that have been influe ncing soil effective coefficient that ' s soil organic matter, total nitrogen, effective phosphine and soil texture in turn. in a word, attenuation cause of land productivity is the result of water and soil. ( e ) the forestland potential productivity change from 3986 kg / hm2 to 15034 kg / hm2, but it has a high distinction between southern aera and north area in yaan city. ( f ) the grassland potential productivity increase from 4085 kg / ( hm2 - a ) to 16973 kg / ( hm2 - a ), but it has a high classification of potential productivity, ( g ) ditribution map was formed of potential land productivity. ( h ) it could be act as decision support for agriculture development, national land planning and ecotop constructive, etc

    5 、土地自然生產潛力水平的主要土壤制因素為有機質、全氮,其次為速效磷和土壤質地;區域潛在生產力差異的制約因素,主要為土壤,次為水分,水、土兩項衰減合計為45 . 99 ,石棉、漢源兩縣水、土衰減達到60左右。 6 、林地潛力在3986 15034kg / hm ~ 2之間,高等級林地重小,以大相嶺為,北部的各縣林地生產力水平高,南部的兩縣林地生產力水平較低。 7 、天然草地生產潛力水平高,潛力在16973 4085kg / ( hm ~ 2 ? a )之間,以高產的一、二、三級草地為主,且近10年來該變化不大。
  9. It takes good use of these two numerical computation methods merits and it is valuable for defmiting the computation model of pile ? oil ; at the same time, it builds the computation model of compound pile foundation and uses the software ansys which is about finite element to build the mechanics model. in regular quality soil, the result worked by this way has good unanimity with traditional results, so it applies us strong evidence for using the way which this article tells us to solve problems which is difficult to handle in compound pile foundation, such as irregular quality, layer quality of the soil. at last, taking foundation soil ' s measuring data of liaoning technology university ' s test building for example, and using the way this article tells us to build compution module, we solve the sharing ration of pile and loading board

    本文利用有元與邊元耦合的方法求解樁土相互作用問題,充分利用兩種數值計算方法的優點,對確定樁土相互作用計算模型是一次有益的嘗試;同時建立了群樁相互作月的數學模型,並利用有元分析軟體ansys建立其力學模型,在均質土體中取得了與傳統解答較好的一致性,從而為拓展利用本文所述建模方法,解決群樁作用機理研究中難以處理的土體成層、非均質等性質,提供了有力的根據;最後,以遼工大實驗館地基土實測資料為,利用本文建模方法,求解出承臺與樁的荷載分擔,對安全、經濟地進行群樁基礎設計具有重要指導作用和應用價值。
  10. It is hardly poetic to write about a knockout ' s two - thirds ratio, nor equally appropriate across cultures to scribe complementary descriptions of bosoms and behinds, so the analysis focused on romantic references to female waists

    關于美人的2 / 3的作品很難有什麼詩意,同樣,跨越文化去記錄豐乳肥臀的贊譽之辭也不合適,所以,分析的重點集中在對女性腰肢的柔情描寫上。
  11. For example, the distribution of the penalty towards the thieves and burglars offense often tends to violate correspondence principle between the crime and the punishment and breach the equal principle, etc. with regard to the reserving of the death penalty to the thieves and burglars offense in our country penal code, the author expresses his ideas that it should be abolished because it not only does not agree with the rationality of the distribution of punishment but also not match the current criminal policy in the

    作者認為,我國1997年刑法與1979年刑法相,在盜竊罪的法定刑配置上,盡管具有法定刑更加輕緩、注意制了死刑適用和加強了財產刑的配置等特點,但是,其中仍然存在不盡人意之處,如對盜竊罪的法定刑配置違背罪刑相應原則、違反了平等原則,等等。特別是對於我國刑法中仍對盜竊罪保留死刑的立法,作者表示出斷然否定的態度,並認為對盜竊罪設立死刑既不符合配刑理性,又不符合當今刑事政策的世發展趨勢。
  12. First, based on the analysis to the development condition of computer and property of the input data of bridge, this paper, taking convenience and practicability as principle, develops the multi passages data - in system made up with human - computer interactive interface and excel import model. second, after comparing and analyzing to the calculation theories and methods of creep and shrinkage, clearing up the key steps of creep and shrinkage analysis, the paper takes incremental method to establish program to analyze secondary inner force caused by creep and shrinkage. third, the paper puts some optimal or simplified treatment to the contents of pre - stress and develops relative program ; in addition, through analysis to the different methods used to calculate the secondary inner force caused by pre - stress, the paper combines equivalent load method with finite element, carries out some simplified treatments, and establishes program to calculate secondary inner force caused by pre - stress

    首先,在分析當前計算機的發展狀況及橋梁結構輸入數據特點的基礎上,以方便、實用為原則,採用人機交互面和excel輸入方式聯合的多通道數據輸入系統;其次,通過較分析徐變收縮計算的各種理論及方法,澄清了徐變收縮分析的關鍵過程,並採用增量法編製程序,實現徐變收縮次內力分析;再次,對預應力的相關計算內容進行適當優化或簡化處理,並編制相應程序;另外,本文還在較預應力次內力各種計算方法的基礎上,將等效荷載法結合有元進行一些簡化處理,編製程序實現預應力次內力的計算;最後以三個算來校核計算方法及程序運行結果的可靠性,取得了預期效果。
  13. The bill also formalizes the existing concessions for bona fide hotel developments which may be constructed to a non - domestic plot ratio of 15, rather than 10 for buildings classified as domestic, and with the more relaxed non - domestic site coverage restrictions

    草案亦明確定批予真正興建旅館項目的現有優惠,使這些項目的地積率由住用建築物的十倍增至非住用建築物的十五倍,並使它們得享非住用地上蓋面積較寬松的制。
  14. Referring to three kinds of plan irregularity, structures individually with four kinds of irregularity as eccentricity in one direction, eccentricities in two directions, re - entrant corner irregularity and diaphragm discontinuity have been analyzed to investigate the relationship between torsion effects and parameters of above irregular structures. the parameters and the schemes for determining the scope of structures with different kind of irregularity considering seismic action in two directions simultaneously are proposed, some conclusions have been get as following : it is indicated by the analysis results that torsion effect has no dependency relation with eccentric torsional angel adopted in code for seismic design for buildings. it is suggested that the eccentric torsional angel should not be take as the parameter of torsion effect of structures considering seismic action in two directions simultaneously ; for the structures with regular plan and elevation and with eccentricity in one direction due to irregular mass layout, the relative eccentricity can be take as the parameter of torsion effect of structures considering seismic action in two directions simultaneously ; for the structures with regular plan and elevation and with eccentricities in two directions due to irregular mass layout, the ratio of relative eccentricities in two directions and the angel of them can be take as the parameters of torsion effect of structures considering seismic action in two directions simultaneously ; it is indicated by the analysis results that the torsion effect has no dependency relation with re - entrant corner ratio adopted in code for seismic design for buildings as

    所取得的主要結論有:結構的扭轉效應與《抗震規范》所採用的扭轉不規則指標即偏心扭轉角之間的相關性較差,偏心扭轉角不宜作為判斷結構是否計及扭轉效應及需考慮雙向水平地震作用的定指標;對于樓層間均勻偏心的多層單向偏心結構,建議採用相對偏心距作為需考慮雙向水平地震作用的定指標,並給出針對不同平面尺寸的相對偏心距;對于樓層間均勻偏心的多層雙向偏心結構,建議採用兩個主軸方向的相對偏心距及其夾角作為定指標,結合單向偏心結構的定方案進行需考慮雙向水平地震作用的結構范圍定;凸凹不規則結構的扭轉效應與凸凹無正相關關系, 《抗震規范》要求所有平面布置不對稱的凸凹不規則結構計及扭轉效應的規定欠妥當,建議凸凹不規則值從30改為15 ,只要求分析採用空間模型較合適; 《抗震規范》關于有效樓板寬度較小的結構需計及扭轉效應的規定很有必要,樓板局部不連續的結構需採用符合樓板實際剛度的計算模型予以分析,可使用相對偏心距(及其夾角)參照單向(和雙向)偏心結構的定方案,定樓板局部不連續結構是否需要計入雙向水平地震作用下的扭轉效應。
  15. There are three main approaches to predict the noise level : similitude structure method including the frequency - response method and proportion method, modal method including finite element method ( fem ) and boundary element method ( bem ), and statistical energy analysis ( sea ). the advantage of similitude structure method is to give the predicting data fast, but it has some error because of dealing with rough similitude parameter and mass load

    目前對噪聲預示主要有三個方法:一是相似結構外推法,包括頻率響應法和法等;二是傳統的模態方法,包括有單元方法( finiteelementmethod , fem ) 、邊單元方法( boundaryelementmethod , bem )等;三是統計能量分析方法( statisticalenergyanalysis , sea ) 。
  16. Based on e - v model, empirical analysis on sample stocks of shanghai 30 index is made. according to the model, efficient frontier is plotted and optimum proportion is worked out. we can find that risk is reduced to the lowest level as result of investing to 9 stocks

    在e - v模型的基礎上,針對我國證券市場上證30指數的指標股為對象進行實證研究,以周收益率為基準,計算出有效邊,得出最優投資,結果表明,只需要將投資分配于其中的9隻股票,就可以將風險降低到最低度。
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