principle of variation 中文意思是什麼
principle of variation
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。 -
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 -
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 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。 -
Therefor, in the light of theory and methods of karst hydrogeomorphology and the knowledge of transformation, balance and variation of matter and energy in karst drainage basin, we can examine stone forest within a specific scope of time and space, and reveal the mechanism and the development model of stone forest with the help of the principle of the mutual response processes among base - level, water flow and forms. just based on the understanding above, the paper, with a special reference to the lunan stone forest which is the best developed one in china, discusses the hydro - geomorphlogical structure of the bajiang river, geomorphological types and spacial distribution feature of the stone forest, and studies the erosion rate on the top of stone forest, soil erosion rate, sub - soil dissolution rate and their combined influences on the evolution of stone forest, furtherly brings forward and demostrates the " tri - level erosion " mechanism for the development of stone forest
正是基於這種認識，本文以我國石林發育最完美的路南石林為研究對象，研究了巴江喀斯特流域的水文地貌結構特徵、石林的形態類型及其空間分佈特徵；探討了石柱頂部的剝蝕速率（ a ） 、表土剝蝕速率（ s ） 、土下溶蝕強度（ c ）及其組合對石林發育的影響，提出並論證了路南石林發育的「三重剝蝕」機制；通過對石林發育必備條件的剖析，以及對巴江喀斯特流域演變階段的定量研究、水文地貌系統的空間耦合分析，探討了巴江喀斯特流域的演變與路南石林發育間的關系，並結合該流域的演化史，提出了巴江喀斯特流域演變與路南石林發育的模式。 -
The principles of specialization and inheritance resemble the principle of variation in species proposed by charles darwin
這種專門化和繼承的原理與charles darwin提出的不同物種分類原理很相似。 -
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。 -
This valve uses the principle of two - stage pressure reducing variation and, when to lower the switch valve, the shock from the water pressure to the valve casing shortens the start time of this valve under the highest medium pressure and makes it with the incomparable superiority of energy saving among the pulse - type electric - controlled valves
該閥採用二級減壓變化原理，降低開關閥時水壓對閥體等配件的沖擊，提高電磁閥的可靠性和工作壽命，縮短了閥在最高介質壓力下開啟時間，使其在脈沖式電控閥門中具有無可倫比的節能優勢。 -
Fcd. 3 138d : 4ds outer - thread copper pipe union at both ends of the inlet and the outlet this valve uses the principle of two - stage pressure reducing variation and, when to lower the switch valve, the shock from the water pressure to the valve casing shortens the start time of this valve under the highest medium pressure and makes it with the incomparable superiority of energy saving among the pulse - type electric - controlled valves
該閥採用二級減壓變化原理，降低開關閥時水壓對閥體等配件的沖擊，提高電磁閥的可靠性和工作壽命，縮短了閥在最高介質壓力下開啟時間，使其在脈沖式電控閥門中具有無可倫比的節能優勢。 -
Fcd. 3 138g : 4ds outer - thread copper pipe union at both ends of the inlet and the outlet this valve uses the principle of two - stage pressure reducing variation and, when to lower the switch valve, the shock from the water pressure to the valve casing shortens the start time of this valve under the highest medium pressure and makes it with the incomparable superiority of energy saving among the pulse - type electric - controlled valves, combining to increase filtered to regulate the discharge function with machine type
該閥採用二級減壓變化原理，降低開關閥時水壓對閥體等配件的沖擊，提高電磁閥的可靠性和工作壽命，縮短了閥在最高介質壓力下開啟時間，使其在脈沖式電控閥門中具有無可倫比的節能優勢，並在接線上採用密封插件，並增加了過濾器和機械式調節流量功能。 -
Genetic algorithm based on the conception of biological evolution designs a series of process to optimize the solution. these processes include gene combination 、 crossover 、 variation 、 natural selection. in these procedures, eliminate the bad gene through the principle of “ survival of the fittest ” and develop the solution to better direction
遺傳演算法是基於生物進化的概念設計了一系列過程來達到優化的目的。這些過程包括:基因組合、交叉、變異、自然選擇。在這些過程中，通過「優勝劣汰」的原則來淘汰掉解較差的基因，使得解朝著好的方向發展。 -
Welch, 1967 ), the author calculated noise power spectrum of every site to see if the noise level of the array site accord with ims standard ( the noise level at 5 hz must lower than - 135db ), and the result suggest that the noise level accord with the ims standard. to find out the principle of noise ' s variation, the root mean square of every site had been calculated and analysised, the result show that several sites had obvious daily variation which is relevant to the tv transmittion tower on the top of dajianshan
Welch ， 1967 ）對臺陣陣址各測點的噪聲功率譜進行了計算與分析並對各測點的噪聲均方根值做了計算，結果表明臺陣的背景噪聲達到了ims要求的標準（即在5hz處噪聲功率譜要小於- 135db ） ，多數測點的噪聲有明顯的日變化規律，這與大尖山頂的tv發射塔有關。 -
The paper introduces the development of the thickness control technology for strip mill, and reasons affecting thickness variation, and discusses the principle of agc control on cold mill, the algorithm and characters
摘要介紹板帶軋機厚度控制的發展及影響板帶厚度波動的原因；分析、討論冷軋機應用的各種agc的控制原理、控制演算法以及各自的特點。 -
On the principle of variation of state
論情勢變更原則 -
As a kind of dispersed numerical value method, the finite element is of approximate methods, and is based on principle of variation
有限元法作為一種離散化的數值方法，是一種近似方法，其理論基礎是變分原理。
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