正比常數 的英文怎麼說

中文拼音 [zhēngbǐchángshǔ]
正比常數 英文
proportionality constant
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 正比 : [數學] direct ratio; direct proportion
  1. Results the diagnostic accuracy of cut film with conventional ap and lateral views was 80. 5 %, the diagnostic accuracy of cine film with angulated views was 90. 0 % and the diagnostic accuracy of dsa using non - ionic contrast medium with angulated views was 96. 5 %

    結果用快速換片心血管造影設備和常規正側位元投照時的兒童先天性心臟病心血管造影診斷符合率為80 . 5 % ，用電影心血管造影設備和軸位元成角投照技術時的造影診斷符合率為90 . 0 % ，採用數字減影心血管造影設備，軸位成角投照技術和非離子型對比劑時的造影診斷符合率為96 . 5 % 。
  2. The derived dry bulk modulus must be positive and greater than 2 / 3 of shear modulus to insure a positive lame constant and poisson ' s ratio

    提取的乾燥體變模量必須為正，並且大於剪切模量的2 / 3 ，以保證拉梅常數和泊松比為正。
  3. Gathering fuzzy technique and model - identifying technique to processing research, fuzzy model - identifying technique, a intersecting science, has been come out, which has become hoto in this thesis, based on deeply researching the fuzzy unit - identifying and complete analysis on data of measuring well of the chandqing wushenqi district, the method of constructing self - adapting multi - dimension non - liner subjection degree function has been created without precedento based on the extraction of routine measuring well character parameters, and for adopting self - adapting method to carry through character compression, the model has been improved the performance and enhanced the convergence speed and sorted precision of the algorithm o the relation of measuring well information and the oiliness & gassiness of sandstones is fuzzy ? in the thesis, the law of max subjection degree has been studied and improved, and proved preferable effect in the practical application

    論文在提取一些常規測井特徵參數的基礎上，採用自適應方法對各變量多項式進行優選，減少了特徵參數間的相關性，突出了類別間的差異性，從而優化了模式的質量，提高了分類的精度。測井信息和砂體的儲集性之間的關系是帶有模糊性的，論文對模糊「最大隸屬原則」進行了研究和改進，並在實際應用中取得了較好的效果。論文成功研製了「自適應」的演算法和軟體? ?即通過對正確回判率的比較，然後對參數進行調節的辦法，可將模式「訓練」到最佳狀態。
  4. The morbidity and mortality of the host species is usually proportional to the number of cocidial cocysts ingested.

    宿主的發病率和死亡率與吃進球蟲卵囊的數目，通常是成正比的。
  5. These observations show that reprogramming is easier in interspecific embryos reconstructed with es cells than that reconstructed with somatic cells, and that es cells have the higher ability to direct the reconstructed embryo development normally than fibroblast cells. oocytes were reconstructed with outbreeding kunming albino mouse es cells and enucleated rabbit oocytes, and the effects of the passages of es cells and 6 - dmap on the development of interspecific reconstructed oocytes were analyzed. the interspecific reconstructed es - rabbit oocytes were activated either by combined two set electric pulses and 6 - dmap or by two set electric pulses

    以上結果顯示， 6 dmap能增加胚胎幹細胞異種重構卵的卵裂率，對重構卵囊胚的發育率影響不大；高培養代數和低培養代數的胚胎幹細胞用於異種核移植不影響異種重構卵的卵裂率和囊胚發育率；用胚胎幹細胞作為供核細胞；比體細胞作為供核細胞所構建的異種重構胚更容易進行重編程，並且胚胎于細胞指導異種克隆胚胎正常發育的能力強于體細胞。
  6. Their heights were around four standard deviations below the 50th percentile of the normal growth curve

    他們的身高大約比正常生長曲線的第50個百分位數低4個標差準。
  7. The asteroids are the most important small bodies in the solarsystem, and they mainly lies in the two locations - a main belt between the mars ' s orbit and the jupiter ' s and the near - earth space. the most feature of the orbits of near - earth asteroids ( neas ) is that the semi - major axes of the orbits are nearly equal to that of the earth or the perihelia distances are approximate to or even less than the mean distance between the sun and the earth, thus they could move into inside of the earth ' s orbit, so that they might close approach or even colliside with the earth ( or other planets, such as the venus, the mars, etc. ). the characteristic brings about some difficulties in the numerical research during their orbital evolution, which leads to the failure of the normalization technique in the general removal impact singularities of celestial mechanics methods and the symplectic algorithm which is successfully applied to the investigation in quality. by comparing the computation effects of several common numerical methods ( including symplectic algorithm ), and considering the nature of the movement of the small bodies, the corresponding treatments are provided here to improve the reliability of the computation

    小行星是太陽系最重要的一類小天體，主要分佈在兩個區域；火星和木星軌道之間的一條主帶和近地空間.近地小行星軌道的最大特點是其軌道半長徑與地球軌道半長徑相近，或近日距離接近甚至小於日地平均距離，其運動可深入到地球軌道的內部，這將導致該類小行星與地球（還有金星、火星等）十分靠近甚至發生碰撞.這一特徵給其軌道演化數值研究帶來一些困難，包括天體力學方法中一般消除碰撞奇點的正規化處理以及對定性研究十分成功的辛演算法都將在不同程度上失效.通過對幾種常用數值方法（包括辛演算法）計算效果的比較，根據小天體運動自身的特性，給出了相應處理措施，從而可提高計算結果的可靠性
  8. The mice showed also ageing - associated decline in oocyte quality, as indicated by increased frequency of premature chromatid separation, spindle disruption and / or chromosome misalignments in mii oocytes of aged mice. the gv oocytes from aged mice normally matured in vitro. the percentages of pronuclear - stage embryos, 2 - cell embryos and blastocyst derived from mii oocytes of aged mice by in vitro fertilization ( ivf ) were comparable with ones of young mice, but pronuclei formed 1 h later in aged mice than in young mice

    老齡小鼠gv期卵母細胞能正常體外成熟；老齡小鼠m期卵母細胞經體外受精后形成原核期胚、 2 -細胞期胚和囊胚的比率與年輕小鼠比較無顯著差異，但原核形成時間延遲1小時；在老齡小鼠卵母細胞，注射牛精子抽提物或sr ~ （ 2 + ）處理時所誘發的ca ~ （ 2 + ）振蕩以及在減數分裂成熟及早期胚胎中的pkc分佈未發生改變。
  9. The important meaning in which this direction studied has lain in establishing the connection between the material science of concrete and civil engineering, analyse the strength in terms of material microcosmic or the mesoscopic, have important meaning to understanding, know the essential law of the strength of concrete. this text divides six chapters altogether. chapter one reviewed the pore structure in nowadays domestic and international research current situation, including the concrete examines research, research of the pore structure model and the research current situations of pore structure and strength relation of the pore method, have introduced some most important achievements of structure research of pore ; chapter two narrated much yardstick of the material mesoscopic structure of concrete and principle of examining pore technology of material of concrete, and the commonly used sign parameter in discussedding the pore and material pore of quito of cement and analyse, have explained that the influence factor of mip to the result of study of pore, has pointed out the limitation in mip in the pore structure ; analyse porosity and strength relation development course of model emphatically, and has carried on comparative analysis to the existing model, has pointed out the weak point of the original model ; on the basis of " ing integrate synthetically ", propose concrete pore structure compound body model and pore physical model of systemlex body ; chapter five carried on the corresponding test data to compares to the model parameter appearing in model of chapter four with and analyses, have received k value of the characteristic of strength of matrices of reflecting according to the method to return to analysis, and calculate the influence produced on the strength of concrete in revision that can probed into the content of cement, elastic mould and surface energy, exactness of the inspection model ; chapter six is the conclusion, according to studying the survey this text to some research conclusions of the pore structure and making corresponding prospect to the structure development of pore

    第一章回顧了孔結構在當今國內外的研究現狀，包括混凝土測孔方法的研究、孔結構模型的研究及孔結構與強度關系的研究現狀，介紹了孔結構研究方面的一些最重要的成果；第二章敘述了混凝土材料細觀結構的多尺度性及混凝土材料測孔技術的原理，並討論了水泥基多孔材料孔隙分析中常用的表徵參數，也說明了壓汞法測孔對研究結果的影響因素，指出了壓汞法在孔結構研究中的局限性；第三章是著重分析了孔隙率與強度關系模型的發展歷程，並對已有的模型進行了比較分析，指出了原有模型的不足之處；第四章在「綜合集成」的基礎上，提出了混凝土孔結構復合體模型和孔系統的物理模型，並模擬了該模型下由各單體並聯形成的復合體的斷裂過程，最後根據所建模型編制了相應的計算程序，可根據輸入的孔徑分佈與水泥含量等參數，實現混凝土理論強度的計算；第五章對第四章模型中出現的模型參數進行了相應的試驗數據對比分析，根據回歸分析的方法得到了反映基體強度特徵的k值，並從理論上探討了水泥含量、彈性模量和表面能的修正對混凝土強度計算產生的影響，檢驗模型的正確性；第六章是結論與展望，根據研究綜述了本文對孔結構的一些研究結論並對孔結構發展作了相應的展望。
  10. For design calculations, it is usually adequate to use the theoretical value for the approximate mixture ratio, corrected by a typical combustion efficiency factor.

    對于設計計算，採用相應混合比的理論值，並用典型的燃燒效率系數來修正，通常這樣做是恰當的。
  11. Because modified arrhenius formula considers the effect of temperature variation to activation energy, by the proposed methods, propellant storage life can be predicted more accurately, compared with arrhenius method which considers activation energy as a constant

    由於修正的阿倫尼斯公式考慮了溫度變化對活化能的影響，所以與將活化能看成常數的阿倫尼斯方法相比，文中方法可以更準確地預測固體推進劑的貯存壽命。
  12. We have the following results through simulation and experiments : i ) turbulent structure constant of atmosphere decreases with altitude ; ii ) turbulence induced power scintillation decreases with the optical wavelength ; iii ) scintillation of space - to - ground optical propagation is smaller than that of horizontal optical propagation ; iv ) power scintillation of space - to - ground optical propagation increases with wavelength ; results above are accord with existent theory. what ' s more, the last result discovers a new rule

    通過對數學模型和模擬結果的分析，得到以下結論： a ）大氣湍流結構常數隨海拔高度的增加而迅速減小； b ）由湍流引起的光功率閃爍與波長呈反比； c ）空-地激光通信的光功率閃爍小於地面水平傳輸的閃爍； d ）空-地激光通信的光功率閃爍與波長呈正比；上述結果與理論保持一致。
  13. After analyzing the distribution of most attack packet size and the distribution of small packet percentage in normal datasets, a based on small packet threshold adaptive sampling method is proposed to promote the capacity of capturing attack packets. sampling strategy adjusts automatically according to the variation of small packet in order to capture more attack packets

    為了提高攻擊報文的捕獲性能，在分析了攻擊報文大小分佈和小報文在正常數據中的比例分佈的基礎上，本文提出了基於小報文閾值的自適應采樣演算法，監測小報文的變化情況動態地調整采樣策略，更多地捕獲攻擊報文，為後期的分析和處理打下良好的基礎。
  14. If either of strength and stress is stochastic variable and another is fuzzy variable, the. fuzzy variable can be transformed to section number on the assumption that the probability of fuzzy variable taking some points in that section is proportional to its value of membership function respectively, then the probability of structural fuzzy event is transformed to general probability with stochastic strength and stress variables and can be solved by general probability theory

    當強度和應力之一為隨機變量，另一個為模糊變量時，提出將模糊變量通過模糊集合截集轉換為區間數，並假定模糊變量在此區間取值的可能性與相應的隸屬函數值成正比。採用上述處理后，結構模糊事件的概率即轉化為相應的普通事件概率，可按應力和強度為隨機變量，用常規可靠性理論進行求解。
  15. In chapter l, we introduce the relative background on this paper and give some simple expressions of the work which have been studied. in chapter 2, in virtue of the notion of likelihood ratio the limit properties of the sequences of dependent nonnegative continuous random variables are studied, and a class of strong limit theorems represented by inequalities are obtained. the bounds given by these theorems depend on positive constant c. in chapter 3, by means of the notion of log likelihood ratio, a kind random strong deviation theorem are obtained, and the bounds given by these theorems depend on r ( )

    第一章，介紹本論文的選題背景，對已有的工作進行扼要的介紹；第二章，利用似然比的概念研究相依連續型非負隨機變量序列的極限性質，得到一類強偏差定理，其偏差界依賴于正常數c ；第三章，利用對數似然比的概念得到一類隨機偏差定理，其偏差界依賴于r （ ） ，證明中引進了尾概率和尾概率的laplace變換的概念；第四章，利用對數似然比的概念，得到了一類關于任意連續型隨機變量序列的泛函的強偏差定理。
  16. What we can do is is get hand - crafted products made in lower than normal quantities in china

    我們能夠做到的是在中國以比較低的價格買到正常數量的手工藝品。
  17. The monthly mean minimum temperature of 27. 6 degrees equaled the record high value set in 1993. the monthly rainfall of 101. 8 millimetres, less than one third of the normal figure of 323. 5 millimetres, was the lowest on record. waterspouts and funnel clouds occurred over hong kong waters on july 1, 6, 9 and 31

    8毫米，比正常數值323 . 5毫米的三分一還少，是歷來最低紀錄。七月一日、六日、九日及三十一日在香港水域出現水龍卷及漏斗雲。
  18. Pca model was set up based on the normal history data of the system to detect the sensor faults by comparing the projection on the residual subspace to which the real measurement vector and normal vector were projected

    主成分分析法根據系統正常的歷史數據建立數理統計模型，通過傳感器實際測量數據與正常數據在故障子空間投影的比較，對傳感器的故障進行在線檢測。
  19. The method in which the whole solution and the local solution is contrasted is applied to deduce the stress intensity factor solution for the model crack of the orthotropic materials, and then the influence of the materials on the stress intensity is investigated briefly

    摘要利用對比全場解和局部解的方法，得出了正交異性材料型裂紋的應力強度因子表達式，並將材料常數對其的影響做了簡單的探討。
  20. The numerical results under different methods, especially the simulation of recirculation region and reattachment length were carefully checked and compared. it indicated that the " variable c ? " model could effectively increase the dissipation near the wall and, more over improve the simulation of the reattachment length to close to the experimental results. 4

    比較不同修正方法下的圓管湍流計算結果，尤其是迴流區域和再附著長度的模擬結果表明：變模型常數的-模型有效地的增加了近壁區域的湍能耗散率，使再附著長度的計算結果更接近於實驗結果。
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