等效常數 的英文怎麼說

中文拼音 [děngxiàochángshǔ]
等效常數 英文
equivalent constant
  • 等 : Ⅰ量詞1 （等級） class; grade; rank 2 （種; 類） kind; sort; type Ⅱ形容詞（程度或數量上相同） equa...
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 數 : 數副詞（屢次） frequently; repeatedly
  1. Following this, a new phenomenological eos along isotherms that may be used at high pressures for nacl - type and cscl - type alkali halides, metals, periclase ( mgo ), rare - gas xenon solid, and so on, is presented, by making use of the definition of short - distance repulsive force constant ( a ) and the phenomenological function a ( r )

    在此基礎上，從短程排斥力常數a的定義，及其與原子間距r唯象函數出發，提出一個可應用於相對高壓下的新的等溫固體物態方程，並對它的有效性和應用性進行了研究與討論；本文還在實驗數據的基礎上，運用了等壓過程中anderson - gr （
  2. But there is a main question that pvdf does not be in p phase with higher piezoelectric property, but be in other phases with lower or without piezoelectric property, thus, which can not improve distinctly piezoelectric constant d33, reduce notably dielectric spoilage ( tg5 ) and raise remarkably mechanical coupling factor ( kp ) of 0 - 3 pzt / pvdf piezoelectric composite, so these will restrict its development and application. in this paper, 0 - 3 pzt / pvdf piezoelectric composite will be prepared by room pressing - solidity, high - temperature - pressing and room - pressing techniques respectively

    由於這個壓電復合材料體系存在一個主要問題? pvdf在0 ? 3型pzt / pvdf壓電復合材料中通常不是以具有較強壓電性的相晶態形式呈現，多是以其它的相態存在，不能有效地提高0 ? 3型pzt / pvdf壓電復合材料的壓電常數d _ （ 33 ） 、降低介電損耗tg和增大機電耦合系數kp等壓電和介電性能，從而嚴重地制約它的發展和應用。
  3. This thesis has studied the dynamic features of a class of the discrete - time neural network model of two neurons, such as the convergence and periodicity and etc. the function of the neuron signal transmission in this model, which belongs to three piecewise constant argument, indicates the following charactersif the signal of one neuron on the network is active between a and b, it will produce invariable encouragement effect on another neuron ; if the signal of one neuron is lower than a, it will produce invariable restrain effect on another one, if the signal of one neuron is higher than b, it will produce no effect on another one

    本文研究了一類二元離散人工神經網路模型的解的收斂性及周期解的存在性等動力學特徵。該模型的神經元信號傳遞函數是三段常數不連續函數。這種信號傳遞函數表明如果某神經元的信號在a與b之間活躍，則它對另一個神經元產生恆定的激勵效果，如果某神經元的信號低於a ，則它對另一個神經元產生恆定的抑制效果，如果某神經元的信號高於b ，則它對另一個神經元不產生作用。
  4. The leading candidate to explain dark energy ' s effects is vacuum energy, which is mathematically equivalent to the cosmological constant that einstein invented in 1917

    要解釋暗能量效應的首選，便是真空能量，它與愛因斯坦在1917年所創的宇宙常數，在數學上是等價的。
  5. According to the method of e. b. seydel, the geometry orthotropic plate was transferred into material one, and also the equivalent material coefficients of cspl ( corrugated steel plate ) were calculated

    按e . b . seydel方法，將波紋鋼板的幾何正交異性轉化為材料正交異性，計算了其等效材料常數。
  6. It is derived the hamiltonian for the interaction of a - type three - level atom with a two - mode quantum cavity field from the general interaction hamiltonian between a multi - level atom and a multi - mode radiation field, and reduce it into an effective two - mode raman - coupled mode under large detuning condition. it is proposed a modified effective hamiltonian for the two - mode raman - coupled model. it is found the time - dependent state vectors and present validity conditions for the involved interaction hamiltonians. it is shown that in the study of the two - mode raman - coupled model it is not enough to retain only the usually used effective hamiltonian, one must also take into account the ac stark shift of the atomic levels ( at least one of the levels ). finally, it is studied the atomic dynamics in the interaction of a - type three - level atom with a two - mode quantum cavity field and in the two - mode raman - coupled model. it is found that the number of collapse - revivals, the collapse time and the revival time show new characteristics

    從多能級原子與多模光場的相互作用哈密頓量出發，導出了型三能級原子與雙模光場的相互作用哈密頓量.在大失諧條件下將其化成等效的二能級形式雙模喇曼耦合模型.提出了該模型的一個改進型等效哈密頓量.該哈密頓量由兩部分構成：一部為通常所謂的等效哈密頓量，另一部分描述原子能級的動態斯塔克移動.研究表明，在雙模喇曼耦合模型的研究中，只考慮前者是不夠的，還必須考慮後者.最後，我們研究了該系統中原子的動力學行為，發現崩塌-復甦的數目、崩塌時間和復甦時間均呈現新的特性
  7. In this method, the arch roof with corrugations is equivalent to orthotropic shells, and the equivalent elastic coefficients are determined by simplified calculating formula

    在該方法中，將帶波紋的拱板等效成正交各向異性殼，板殼的等效彈性常數由簡化計算公式確定。
  8. The fact that wave velocity in quasi - saturated soil is equal to that of fully saturated soil could not be calculated by effective fluid compressibility or explained by unwell - distributed saturation. we account for this in a new reasonable way which was based on kuster scattering effect analysis

    （ 8 ）根據kuster散射波理論，計算了飽和度大於85的準飽和土體的彈性波速，其結果與試驗非常吻合；但是，通常所用的等效孔隙流體壓縮系數的方法所計算的結果與實驗結果差別很大，對此，筆者給予了一定的解釋。
  9. Application of equivalent elastic constants of porous rock to hydraulic fracturing

    水力壓裂中多孔巖體的等效彈性常數應用
  10. Secondly, from the view of the analysis of potential science, the teaching mode of the basic constants in physics is presented. thirdly, on one hand, author analyses the basis of epistemology, scientific philosophy and psychology of the teaching mode, on the other hand, author investigates the potential properties and shapes of the basic constants in physics. at the same time, it is also given the path of applying the theories and methods of potential science to the teaching of the basic constants in physics

    本論文首先，扼述基本物理常數「潛? ?漸顯? ?顯? ?漸潛… … 」潛科學分析的分析理念；其次，探討基本物理常數潛科學分析的教學模式：提出問題，引起認知定向呈現進化過程，挖掘物理內涵揭示並闡述潛科學特徵採取有效途徑，培養科學素質再次，一方面從理論上闡釋基本物理常數潛科學分析教學模式的認識論、科學哲學和心理學依據，另一方面從實踐上闡釋基本物理常數的創造性、反常性、待定性、隱變性、高難性及趨顯性等潛科學特徵，同時提出科學問題、科學幻想、科學猜測、科學經驗、科學悖論、科學蒙難、科學論爭、科學失誤、科學伯樂、科學潛才等潛科學形態與方法應用於基本物理常數教學中的途徑。
  11. It can acquire the voltage on the test appliance and current in the circuit. and it can see these electrical signals as its input and calculates based on the data and gives the parameters and waveform that user needed. the parameters we can get through calculation include power factor, joule ' s integral, available value, maximal value, minimum value, time constant etc. recently, there are many scholar is studying the algorithm that calculate the parameter using test data, but many of them adopt the heuristic method, not using the test data directly

    本課題研製一套電器試驗參數高速採集系統，能夠檢測試驗迴路中試品上的電壓信號和迴路中的電流信號，並根據這些電信號的數值利用計算機進行在線計算，並給出用戶需要的各種電參數值和用戶需要的波形圖，通過計算得到的電器參數有功率因數、焦耳積分、有效值、最大最小值、時間常數等。
  12. Due to its flexibility, the lrt system can be designed to match both the physical environment and transport demands as well as to provide an alternative choice with quality service. all these factors have contributed to the phasing - out of the old streetcar systems. beginning in the mid - 1970s, light rail transit systems have enjoyed a period of sustained growth, not only providing public transportation but also contributing to the renewal of declining city districts, reutilizing unused rail lines, and providing impetus to local economic development

    使得有軌電車自1970年代中期，以輕軌運輸的新風貌漸漸復興，不僅擔負公共運輸功能，更常結合老市區都市更新、舊鐵道再利用、促進經濟再發展的聯合開發計畫，吸引民間投資參與建設，透過由街道面進出的低月臺車站、無欄柵式收費制度、造型流線超低底盤車輛、軌道沿線綠化設施等設計，在都市環境改善與都市永續經營上，充分發揮凈化、綠化、人性化、地標化等效益，發展至今估計全世界輕軌運輸系統路網數目已達約400個左右。
  13. The study results display : the particle shape trends to needle more, the effective permittivity is bigger when the volume of particle is the same. the particle shape trends to penny more, the effective permittivity is bigger when the volume of particle is the same. the dimension of particle does n ' t affect the effective permittivity when the shape of particle is equal

    本文的研究結果表明，對于無殼顆粒復合材料在相同的體積情況下，粒子的形狀越是趨于針形，等效介電常數越大；粒子形狀越是趨于便士形，等效介電常數越大；比較而言，便士形的等效介電常數大於針形的介電常數，而以球形的介電常數最小。
  14. On condition that the volume of particle is equal, the effective permittivity of penny shape particle is the biggest, that of the needle shape is second, and the spherical shape is the last. when the thicker of shell is constant and the radius of core is bigger, the effective permittivity is less. the effective permittivity will change acutely when the thicker of shell is close to the radius of core ; with the radius of core increasing, the effective permittivity of core - shell type particle will approach that of no shell type particle

    在相同的形狀下（如便士形和針形） ，粒子的大小對于等效介電常數沒有影響；對于核殼形夾雜顆粒復合材料，當殼的厚度一定時，隨著核的半徑的增大，復合材料的等效介電常數越來越小；當殼的厚度和核的半徑較接近的時候，復合材料的等效介電常數將會發生急劇的變化；隨著核的半徑的不斷增大，核殼型顆粒夾雜復合材料的等效介電常數將逐漸的趨近於沒有殼的夾雜顆粒復合材料的等效介電常數。
  15. Several kind of simplified calculating models are introduced. the web and flange plates in mcar with a large number of corrugations were equivalent to orthotropic curve plates. the equivalent elastic modulus was yielded by tensile tests, which provides the material constants data for the structural static and dynamic analysis

    2 、綜述了拱型波紋鋼屋蓋的各種簡化計算模型，並把帶有波紋的腹板和底板分別等效成正交各向異性平曲板，通過拉伸測試了它們的等效彈性模量，為結構的靜力和動力有限元分析提供材料常數依據。
  16. The conventional variable structure control technique for uncertain system requires that the uncertainty bound is known as a premise to assure robustness. the requirement creates an over - conservative controller and enlarges chattering. the proposed controller regards the influence of unknown disturbances and parameter uncertainties as an equivalent disturbance and generates an on - line estimation used in smc to cancel the slowly varying uncertainties by the mechanism of time delay. the reaching law approach is used to get the conditions and band of quasi - sliding mode. the new methodology offers a robust feedback control with much lower gains and reduces chattering without a prior knowledge of the uncertainty bounds or matched conditions

    常規變結構控制用於不確定系統，須利用不確定性界確保系統的魯棒性，控制器過于保守且抖振變大.本文把未知干擾和參數不確定性的影響等效為名義系統的外界干擾，利用時延技術對干擾進行在線估計，並將估計值引入到變結構控制中，從而抵消掉系統中的慢變不確定性，利用離散趨近律法，推出了準滑動模態的存在條件及其帶寬.該方法克服了以往控制方法中須已知不確定性界的限制，且不必滿足匹配條件，用較低的控制增益保證了系統的魯棒性，降低了準滑動模態帶即削弱了抖振
  17. Abstract : the conventional variable structure control technique for uncertain system requires that the uncertainty bound is known as a premise to assure robustness. the requirement creates an over - conservative controller and enlarges chattering. the proposed controller regards the influence of unknown disturbances and parameter uncertainties as an equivalent disturbance and generates an on - line estimation used in smc to cancel the slowly varying uncertainties by the mechanism of time delay. the reaching law approach is used to get the conditions and band of quasi - sliding mode. the new methodology offers a robust feedback control with much lower gains and reduces chattering without a prior knowledge of the uncertainty bounds or matched conditions

    文摘:常規變結構控制用於不確定系統，須利用不確定性界確保系統的魯棒性，控制器過于保守且抖振變大.本文把未知干擾和參數不確定性的影響等效為名義系統的外界干擾，利用時延技術對干擾進行在線估計，並將估計值引入到變結構控制中，從而抵消掉系統中的慢變不確定性，利用離散趨近律法，推出了準滑動模態的存在條件及其帶寬.該方法克服了以往控制方法中須已知不確定性界的限制，且不必滿足匹配條件，用較低的控制增益保證了系統的魯棒性，降低了準滑動模態帶即削弱了抖振
  18. In chapter 3, the numerical methods of hcppc are discussed. four models of fixed grid technique are surveyed. they are total enthalpy method, apparent heat capacity method, effective heat capacity method and the fictitious heat flow method

    首先回顧了常用的數值分析方法，接著重點介紹了固定網格技術中的幾個數值模型，包括焓法模型、顯熱容法模型、等效熱容法模型和擬源項法模型。
  19. Fdtd analysis of dispersion characteristics of 2d dielectric photonic crystal described by effective permittivity in grid

    採用等效介電常數時域差分法分析二維介質型光子晶體色散特性
  20. Comparing our results with that of predecessors, we find that ( i ) there indeed exists a parameter ( impurity bohr radius ajm ) on which the impurity binding energy has strong dependence ; ( ii ) the virial theorem value is non - constant but approach 2 from above when the well width is smaller or larger

    計算結果表明：的確存在一個參數（雜質有效玻爾半徑）可用來完全確定束縛能的值，而不必考慮截面的形狀和尺寸；體系的維里定理值並不等於常數，而是隨雜質有效玻爾半徑的變化而變化，在阱寬較小和較大時，維里定理值都趨于同一值2 。
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