variation principle 中文意思是什麼
variation principle
解釋
變分原理-
The common principle is the use of the induction of an electromotive force by the variation of the magnetic flux through a coil.
一般原理均是使用通過線圈的磁通量變化感應的電動勢。 -
Lagrange multiplicator method is introduced in the numerical computation to release the constraint. galerkin method based on the variation principle is used to solve differential and integral equations
Galerkin方法是基於變分原理基礎上的一種把微分方程或積分方程轉化為等價的變分方程，通過離散變分方程求原方程數值解的方法。 -
This thesis introduces the base theory and correlative information of variable frequency speed variation, and expatiates sinusoidal pulse width modulation ( spwm ). the principle of svpwm is in - depth discussed, and a simple algorithm for svpwm is ratiocinated
本文介紹了交流變頻調速的發展概況，分析了其基本原理，闡述了正弦脈寬調制（ spwm ）原理，對svpwm理論進行了研究，給出了svpwm的簡單實現演算法。 -
The reluctance seismograph implies a variation of the principle of the moving-coil seismograph.
磁阻地震儀改變了動圈地震儀的工作原理。 -
Based on the principle analysis of the vehicle driving wandering and the computer simulation validation, the vehicle driving wandering caused by the variation of these parameters such as camber angle, toe angle, caster moment arm, scrub radius, parallelism between front axle and rear axle, is analyzed and discussed
摘要通過對汽車行駛跑偏的機理分析，並應用計算機模擬進行驗證，對由於尺寸誤差所引起的外傾角、前束角、主銷拖距、主銷偏置距、前後軸平行度等參數的變化對汽車行駛跑偏的影響進行深入的分析和探討。 -
Variation principle of piezothermoelastic bodies, canonical equation and homogeneous equation
壓電熱彈性體的變分原理及正則方程和齊次方程 -
Finally, two - dimensional wave - motion equations of the finite deformation elastic rod are derived by variation principle taking simultaneously geometrical and physical nonlinearity into consideration
最後，利用變分原理又導出同時考慮幾何和物理非線性的有限變形彈性桿的二維波動方程。 -
It dwells here upon the constitutive model of tlastic creep damage of heat resistant steel, establishing a corresponding variation principle and finite element discretization form, thus introducing complete numerical variational methods
主要提出耐熱鋼的彈性蠕變損傷本構模型，建立起相應的數值變分原理以及有限元離散化形式，從而形成完整的數值變分方法。 -
The main researches enclosed in this thesis are as follows : 1. based on the newton ' s law of motion, the law of angular momentum and the variation principle, the dynamic model of the satellite with a flexible appendage has been researched
主要內容有五個方面： 1 、運用牛頓定律、角動量定律和變分原理建立了帶撓性附件的衛星動力學模型，分析了撓性太陽帆板轉動對衛星動力學模型的影響。 -
If it is not good enough, optimal control module based on principle component analysis and clustering search will function for optimization. this algorithm makes no request for accurate analytical model and maintains search efficiency and self - adjusting performance by an optimal parameter set derived from process data, which is proved to be effective. by practical running of dcs, a prominent tracing performance is gained and variation of parameters is limited in a small range, which enhance stability and production benefit of sintering process obviously
燒結過程是一個影響因素復雜、干擾嚴重、具有不確定性的工業過程，傳統的基於對象精確解析模型的優化策略難以奏效，因此在控制參數優化模塊中提出了一種基於主元分析和聚類搜索的優化匹配演算法，該演算法不要求對象的精確模型，其搜索效率和自校正性能依賴于從生產過程歷史數據中抽取的優化參數樣本庫，充分利用了燒結生產過程積累的生產數據所包含的信息，取得了不錯的效果。 -
Reason, on the other hand, is a mere principle or potential order, on which indeed we may come to reflect but which exists in us ideally only, without variation or stress of any kind
另一方面，理性知識一種原則或者是潛在的秩序，我們確實可以在此基礎上存在於我們心中，沒有種種變化，或任何壓力。 -
Based on the discussion on the principle of density - logging, this paper analyses far - gamma gamma rate, near - gamma gamma rate and density - logging curve respectively, and discusses far - gamma gamma rate near - gamma gamma rate and density variation caused by radioactive anomalies, and preliminarily interprets factors that could lead to the variation of density - logging curve of radioactive anomalous layer, thus explaining the reason why density - logging curve changes at the radioactive ore - layer in northern ordos basin, finally, an empirical formula for revising the distortion of density - logging curve has been established
摘要本文概述了密度測井原理，分別對長源距計數率、短源距計數率及密度曲線進行分析，對由於放射性異常引起的長源距計數率、短源距計數率及密度變化情況進行了討論，初步解釋了放射性異常層位密度曲線的變化因素，說明了鄂爾多斯盆地北部地區密度測井曲線在放射性礦段的變化原因。 -
The article expatiates the historical development and trend of estopple, then analyzes its variation and extension in applicable elements and its application, according to its system value to verify its unifying trend, that estopple shall stop using the superficial form of constituting elements and adopt its spirit, to make it a elastic legal principle
本文通過闡述禁反言制度在英國法和美國法上的歷史沿革，分析其適用要件和范圍的變化和擴張，根據其制度價值論證了禁反言規則將擺脫構成條件的表面形式而采其實質精神，使其成為具有彈性的法律原則的統一化趨勢。 -
First, we introduce the development of quality concept, the causes of resulting in variation, the statistical rule of process output and new quality loss principle
本文闡述了質量概念的演化和發展，波動產生的原因，過程輸出的統計規律性及新的質量損失原理。 -
The variation principle of wave velocity in different microstructures of 40cr is similar with that of 38crmoal. the velocity in quenching and low temperature tempering structure of gcrlssimn is much lower than the velocity in normalizing, annealing and high temperature tempering structure
Gcr15simn鋼淬火+低溫回火組織的c _ 1遠大於正火、退火及淬火+高溫回火組織的c _ 1 ；正火、退火及淬火+高溫回火組織的c _ 1比較接近。 -
Considering the fuzziness of some boundary conditions enviroment media, and especially some loads in the engineering structure analysis, we go further into the computation based on the dynamic problem of fuzzy finite element ( ffe ), study further and systematically the analysis and solution. the principle of fuzzy minimum potential energy is established, and the balance equation of fuzzy finite element is reasoned by making fuzzy variation. at the same time, the dynamic balance equation of stochastic by making stochastic variation ， also the fuzzy stochastic dynamic balance equation is deduced. based the theory that the degree of the fuzziness and probability can be measured, in the other word, by using the concept of fuzzy entropy and entropy, pure fuzzy dynamic structure is given through transforming the probability to fuzziness. for the fuzzy parameter can be regarded as a fuzzy vector with dimensions, the structure ' s eigenvalue, by the theory of small parameter
建立了模糊瞬時最小勢能原理，運用模糊變分原理導出了模糊有限元動力平衡方程；同時，利用隨機變分原理導出了動力問題的隨機有限元方程，同時得到了模糊隨機動力問題的有限元平衡方程。根據模糊度和概率度可以度量的原理，即利用模糊熵和概率熵的概念，把結構的隨機性等效地轉化為結構的模糊性，得到純粹模糊性的動力結構。把結構所具有的模糊參數看作一個維的模糊向量，利用小參數攝動原理，把結構的特徵值，特徵向量和位移都在模糊向量的均值處進行泰勒展開，得到一組遞歸方程，即可以求得結構的模糊特徵值，特徵向量和模糊位移。 -
In the chapter 2, based on elastic mechanics and variation principle, the fundamental and process of static and dynamic fem is presented, placing special emphasis on the modal superposition method
第二章根據彈性力學和變分原理，系統總結了有限元法求解靜力學、動力學問題（包括特徵值、動力響應問題等）的基本原理和步驟，並重點對模態疊加法求解動力，響應問題作了闡述。 -
In the buckling question under nonconservation force, a simply example ( the dynamic stability question under the uniformly follower forces with small deformation % linear elastic, straight normal. ) is considered. the variational equation of braid composite cylindrical shells subjectd to uniformly follower forces is deduced based on the variation principle of quasinatural frequency of elastic nonconservative system self - excited vibration. the calculated formulas of the flutter load and quasinatural frequency of shells are obtained. the program for calculating the flutter load is developed. the numerical example is given and some useful conclusions are obtained
對非保守力作用下的屈曲問題，具體研究了圓柱殼在比較簡單的情況，即小變形、線彈性、直法線假設下在隨動力作用下的殼屈曲問題，由擬固有頻率變分原理推出了圓柱殼受隨從力作用的變分方程，得到了顫振載荷與殼彎曲的固有頻率的計算公式，編制了相應的計算機程序，並給出了具體算例，得到了一些有益的結論。 -
Starting from the variation principle of elasticity theory, the finite element method ( fem ) theory is introduced simply
從彈性力學的變分法原理出發，簡單介紹了有限單元法。 -
Furthermore using the variation principle in the elasticity, the wave - motion equation is derived in the finite deformation elastic thin rod with viscous and transverse inertia effects, and the characteristic curves and their characteristic relations are obtained by characteristic line method, and the influence of viscous and geometrical - dispersive effects on the propagation of wave is analyzed
再利用彈性力學中的變分原理，導出了同時計及粘性和橫向慣性效應時的彈性細桿的幾何非線性波的波動方程，用特徵線法得到它的特徵線和特徵線上的相容關系，分析了粘性耗散和幾何彌散效應對波的傳播速度的影響。
分享友人