協變 的英文怎麼說

中文拼音 [xiébiàn]
協變 英文
covariant
  • 協 : Ⅰ形容詞（共同） joint; common Ⅱ動詞（協助） assist; help; aid
  1. The quantities baβ are the covariant components of a plane tensor, called the curvature tensor of the surface.

    ba是「平面張量」的協變分量，叫做該曲面的曲率張量。
  2. Mechanics course mainly includes the description of movement of objects, the instantaneous effect of strength, spatial build - up effect of strength, temporal build - up effect of strength, nonindividual body mechanics, mechanical wave and sound, relativity, inalterability and covariability and mechanics foundation of the theory of relativity

    力學主要內容包括物體運動的描述，力的瞬時效應，力的空間累積效應，力的時間累積效應，連續體力學，機械波和聲，相對性、不變性與協變性和相對論力學基礎等。
  3. First, based on the historical data of 20 years of henan province, the cloud seeding operation cases in april and october in the central region of henan province were evaluated by cluster - analysis - based floating control historical regression method with uniform precipitation and atmospheric precipitable water as meteorological covariates, cluster - analysis - based floating control historical regression method with uniform precipitation as meteorological covariate, and floating control historical regression method ( fcm )

    首先，根據河南省近20年的歷史資料，分別用以降水量為協變量的ca - fcm方法、以降水量和整層大氣可降水量為協變量的ca - fcm方法和浮動對比區歷史回歸統計檢驗方法（ fcm ） ，對河南省4月和10月增雨作業進行評估。
  4. Three evaluation methods for the nonrandomized precipitation enhancement operation effects have been developed based on the regional rainfall control and meteorologit cal covariable correlation : dopple ratio analysis evaluation method using regional rainfall ten - dency control for single cloud seeding operation case ; regression analysis evaluation effects on the bases of regional correlation and developing tendency of rainfall ; and multiple regression analysis with meteorological and physical covariables

    本文根據區域趨勢控制和氣象-物理協變量相關設計了三套非隨機化人工增雨作業效果評估方案：個例作業區域趨勢對比雙比分析評估方案、區域趨勢相關回歸分析評估方案和氣象-物理協變量多元回歸分析評估方案。
  5. Then, six evaluation methods ( double ratio analysis evaluation method using regional rainfall tendency control for single cloud seeding operation case, regression analysis evaluation effects on the bases of regional correlation and developing tendency of rainfall, multiple regression analysis evaluation effects on the bases of regional developing tendency of rainfall, cluster - analysis - based floating control historical regression method with uniform precipitation and atmospheric precipitable water as meteorological covariates, cluster - analysis - based floating control historical regression method with uniform precipitation used as meteorological covariate, and float ing control historical regression method ) were compared and analyzed with the case of the cloud seeding operation on 5 april 2002 in henan province

    然後，以河南省2002年4月5日飛機增雨作業為個例，對作業區域趨勢對比雙比分析評估方案、區域趨勢相關回歸分析方案、區域趨勢多元回歸分析方案、以降水量為協變量的ca - fcm方法、以降水量和整層大氣可降水量為協變量的ca - fcm方法和fcm方法6種評價方案進行分析比較。
  6. It was shown from the result of analysis and comparison that the evaluation efficiency for the non - randomized cloud seeding operations could be improved by using appropriate physical covariate as control factor and increasing the correlativity between rainfall distributions in the control area and target area

    比較分析的結果表明，只要不斷提高對比區和影響區的相關性和引入新的更有效的協變量，就可能提高非隨機化作業的效果評估效率，從而更好的檢驗人工增雨作業的效果。
  7. In the end, cluster - analysis - based floating control historical regression method with uniform precipitation and atmospheric precipitable water as metoorological covariates could more validly evaluate efficiency of cloud seeding operations and significant level of ca - fcm method was higher than the other methods, because it adopted cluster analysis which highly improved the correlativity between rainfall distributions in the control area and target area, and used grid interpolation which enhanced exactness of calculating precipitation rainfall, and chose atmospheric precipitable water as the covariant which increased the inferential accuracy of natural rainfall on the cloud seeding operational area

    最後，得到以降水量和整層大氣可降水量為協變量的ca - fcm方法，由於採用聚類分析（ ca ）方法，提高了對比區和影響區相關性；採用網格插值技術提高了雨量的計算準確度；引入了不受催化影響的物理協變量（整層大氣可降水量） ，提高了作業區自然降水量估計值的準確性；所以評估效果最好，顯著水平高於0 . 05 。
  8. The data on covariance presently available are here.

    目前所能獲得的關于協變的資料都在這兒。
  9. Covariance and contravariance in delegates

    委託中的協變和逆變c
  10. Covariance and contravariance in delegates c programming guide

    委託中的協變和逆變（ c #編程指南）
  11. The covariance should be comprehended and followed dialectically

    必須辯證地掌握和遵循圖書館學發展的協變性。
  12. Every vector can be resolved into covariant or into contravariant components.

    每個矢量都可以分解成協變分量或逆變分量。
  13. A generalized london equation in covariant form

    相對論協變的倫敦方程
  14. Covariant return types are now supported

    現不再支持協變返回類型。
  15. Interspecific covariant among ten mains species groups of arthropods on kudzu pueraria lobata

    葛藤主要節肢動物種群種間協變的研究
  16. The theoretical foundation of the covariance is pertinence of system theory

    協變性的理論基礎是系統原理中的相關性。
  17. Abstract : it is observed that the sommerfeld ' s formula for a progressive spherical wave is not covariant with respectro the rotation of the coordinate system. it contains complex partial waves that are not physical. the standing wave representation of the same formula is shown to be covariant and physical. it is applied to solve the boundary value problem of fiber optics. the radiation modes as well as the guided normal modes are obtained in closed forms. the intensity distribution in various modes is obtained. it is remarked that the mode of critical refraction is missing

    文摘:說明了球面行波的索末菲公式在坐標轉動下不協變.證明了球面波的駐波表示是協變的，因而是一個物理的關系式，故適用於圓柱坐標中各類波動方程的定解問題.作為一個例，應用於光纖光學，導出了受導簡正模和輻射模的表達式，以及各模式的強度分佈
  18. The conclusion that the electromagnetic field is a covariant entia is drawn from the analysis of the forces acting on a moving charge beside a straight carrying wire in several frame of references by special principle of relativity

    摘要利用狹義相對論分別對同一載流直導線外一個運動電荷的受力情況在幾種常用的參考系中分析，得出電磁場是一個協變的統一體的結論。
  19. ? there were extremely significant difference on average home range of male and female voles in different treatment populations ( t = 6. 251, p o. 001 ), and the population mnka were extremely significant correlation with the home range of male voles ( r = - 0. 724, p = 0. 000 ) and female voles ( r = - 0. 814, p = 0. 000 )

    Si4 ， p 0刀00人以體重及種群最小存活數為協變量的ancova表明，種群最小存活數對巢區具有極顯著的獨立作用（ f二18 331 ， p一0刀00人而體重的作用則不顯著（ f 1 876 。
  20. Go a step further, beginning with the relation of the general curvilinear coordinate system and its corresponding reciprocal base, we derived the description of the particle ' s motion in the reciprocal base, and the covariant components of the particle ' s motion were obtained as well

    進一步地，從一般曲線坐標系與其對應倒基的關系出發，導出了一般曲線坐標系對應倒基下對質點運動的描述，並進而給出了質點運動對應的協變分量。
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