有效介電常數 的英文怎麼說

中文拼音 [yǒuxiàojièdiànchángshǔ]
有效介電常數 英文
effective dielectric constant
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 有效 : effective; valid; efficacious
  1. 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。
  2. The essentially universal biophysical phenomenon of " electroporation " occurs if an appropriate pulse field is applied. electroporation is believed to be the rapid creation of aqueous pathways through lipid - containing barriers in cells and tissue. the driving force is the physical interaction of electric fields with different dielectric constants

    電穿孔效應是指在適當高壓脈沖電場作用下，細胞或組織間起相對隔離作用的「屏障」內快速形成液態通道的現象，是電場與具有不同介電常數而且易變形的物質相互作用的結果。
  3. 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。
  4. By extending the pyroelectric theory of a ferroelectric bilayer, we have presented the effective pyroelectric coefficient of a ferroelectric sandwich structure by use of the electrostatic theory. when the pyroelectric coefficient of the interface has a large deviation from that of the two - sided slabs and the dielectric constant of the interface is low, the effective pyroelectric coefficient of the sandwich structure may be one or two order higher than the largest pyroelectric coefficient of the components

    我們應用靜多層結構鐵電系統的物理性質研究摘要電場理論，推廣了鐵電雙層膜的熱電理論，給出了鐵電三明治結構的有效熱電系數，發現在界面層的熱電系數與上下兩層的熱電系數差異較大，且界面層的介電常數較小的情況下，三明治這種復合結構材料的有效熱電系數比單一組份材料的熱電系數可以提高一到兩個數量級。
  5. We take the center of well as the origin of coordinates. we noticed that the electron ' s effective mass is different in the well and in the barrier, but did n ' t pay attention to the mismatch of the dielectric constant

    33 ）量于階中心，把量子階中心選作坐標原點，考慮了在階中和壘中電子的有效質量的不同，但沒有考慮在階中和壘中介電常數的失配性。
  6. In the second part, we discuss the binding energy of the impurity in finite gaas / gai. xalxas quantum wire in the first place, in which the dismatch of effective mass and dielectric constant between the well and the barrier is taken into account

    在第二部分，首先討論了有限深gaas ga _ （ 1 - x ） al _ xas量子阱線中雜質態的束縛能，其中考慮到了阱壘中電子有效質量及材料中介電常數的失配性。
  7. In this dissertation, characteristic impedance and effective permittivity of two well - known electromagnetic stop band structures have been fitted by this method

    本文用該方法擬合了兩個已有的電磁阻帶結構的特性阻抗和有效介電常數。
  8. When a cluster of particles is immersed in a uniform electric field, the particles are coupled together due to the mutual interaction among them. this interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size. in this work, we attempt to estimate the dipole moment of finite cubic arrays of particles, in terms of that of particle chains which has been known. we assume that a chain may be replaced by a single equivalent sphere with the same dipole moment. with replacing the chain by equivalent sphere, a cluster is simplified to a planar array, and this planar array is simplified to a chain, then the dipole moment is obtained. numerical calculations are performed. it is found that our results are acceptable

    置於均勻電場中的一簇球形顆粒，由於其內部的相互作用而耦合在一起.這致使簇的感應偶極矩與簇的幾何結構，大小以及顆粒的介電常數等參量有關.試圖通過已知的鏈的偶極矩確定任意大小長方結構的簇的偶極矩.假定顆粒鏈可以被具有同樣偶極矩的一個等效介質球代替，並將具有空間結構的顆粒簇處理成面結構簇，再將面結構簡化成一個顆粒鏈，從而確定簇的偶極矩.在這一過程中，通過不斷增加等效球的尺寸，將顆粒間的相互作用包含在簇的偶極矩中.數值分析了立方結構簇的偶極矩，結果是可接受的
  9. One reason for that is the dismatching of effective mass and dielectric constant between the well and the barrier, another important reason is the consideration of the correlation between confined and non - confined direction in the wider well condition

    其原因是除了考慮了阱壘中電子有川北帥他人學顧十研究生學位論義蘇會效質量及介電常數的失配性外，更重要的是在寬階時不能忽略限制方向與非限制方向的相關性因素
  10. The even or odd mode effective dielectric constant is calculated by inserting the magnetic wall or electrical wall at the lateral boundry

    通過在電路的兩側人為地插入電壁或磁壁，分別解出電路的偶模與奇模有效介電常數。
  11. In this study, we demonstrate a technique using the multi - temporal c band hh polarized radarsat scansar data to estimate the relative soil moisture change. the experiment data from sgp97 covered a whole range of vegetation growing season and different type agriculture fields

    研究證明，星載合成孔徑雷達（ sar ）得到的地表後向散射系數與地表介電常數有直接相關關系，從而能夠在水文模型要求的精度范圍內有效提取地表土壤水分信息。
  12. Using the method of micromechanics theory and the finite element method, the problem of electromagnetic field of spherical core - shell type particle is studied and effective permittivity forecasting formula of this particle is induced ; the forecasting results is confirmed by the finite element method ; the effect of material parameter and geometry parameter on the effective permittivity is studied

    利用微觀力學方法和有限元方法，對核殼型球形顆粒夾雜的復合材料的電磁場問題進行了研究，得出了核殼型球形顆粒夾雜的復合材料的等效介電常數的預測公式，並用有限元方法進行了驗證：研究了材料參數和幾何參數對等效介電常數的影響。
  13. Abstract : when a cluster of particles is immersed in a uniform electric field, the particles are coupled together due to the mutual interaction among them. this interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size. in this work, we attempt to estimate the dipole moment of finite cubic arrays of particles, in terms of that of particle chains which has been known. we assume that a chain may be replaced by a single equivalent sphere with the same dipole moment. with replacing the chain by equivalent sphere, a cluster is simplified to a planar array, and this planar array is simplified to a chain, then the dipole moment is obtained. numerical calculations are performed. it is found that our results are acceptable

    文摘:置於均勻電場中的一簇球形顆粒，由於其內部的相互作用而耦合在一起.這致使簇的感應偶極矩與簇的幾何結構，大小以及顆粒的介電常數等參量有關.試圖通過已知的鏈的偶極矩確定任意大小長方結構的簇的偶極矩.假定顆粒鏈可以被具有同樣偶極矩的一個等效介質球代替，並將具有空間結構的顆粒簇處理成面結構簇，再將面結構簡化成一個顆粒鏈，從而確定簇的偶極矩.在這一過程中，通過不斷增加等效球的尺寸，將顆粒間的相互作用包含在簇的偶極矩中.數值分析了立方結構簇的偶極矩，結果是可接受的
  14. Then virtual dielectric constant method is adopted to calculate the electric field distribution with floating electrodes, and equivalent conductance rate method is adopted to calculate the electric field distribution with surface filth or local puncture in the insulator, furthermore the value scope of virtual conductance rate and equivalent conductance rate are discussed and some useful results are got. for the solution of vortex loss of silicon steel sheets concerning current transformer, the h solution has also been put forward rather than traditional a ? ( p method in order to reduce calculation load

    採用虛擬介電常數法計算絕緣子存在懸浮導體的電場分佈，採用等效電導率法計算絕緣子存在表面污穢或局部擊穿情況下的電場分佈。對虛擬介電常數和等效電導率的取值范圍進行了討論，得出了一些有用的結論。對于電流互感器硅鋼片渦流損耗的計算，本文提出了不同於傳統的a -方法的h求解辦法，從而大大簡化了計算。
  15. The theoretical results on far - infrared absorption in small metal particle - insulator composite and the dielectric constant of oil / water two - phase random composite system are in good agreement with experimental data

    用該理論分析了金屬微粒絕緣介質的遠紅外吸收和油水兩元混合物的有效介電常數，與實驗結果比較符合。
  16. The result of research into electromagnetic beheaviours of polymeric magnets as follows : all of the two agents ( acrylic acid and polycarbonate ) can reduce effectively magnetic loss and dielectric loss, moreover, acrylic acid can increase the dielectric constant of the polymeric magnet at high frequency and microwave band. on the whole, the polymeric magnet modified by acrylic acid is preferable. the research of ir spectrum and xps of the polymeric magnets have showed that modifying polymeric magnet with acrylic acid is a chemical method in the part of composing polymer, we have chosen ferrocene as raw stuff

    對改性前後高分子磁體的電磁性能研究結果表明：用丙烯酸或聚碳酸酯對高分子磁體進行表面改性，兩種試劑均不影響高分子的磁導率，並且它們均有效地降低了高分子磁體的磁損耗和介電損耗，更有研究意義的足：丙烯酸使高分子磁體在高頻微波下的介電常數得到明顯提高：從總的方面來說，丙烯酸改性高分子磁體優于用聚碳酸酯改性的高分子磁體。
  17. A general expression for the effective dielectric constant of a two - phase random composite system was derived by using effective media theory

    利用有效介質理論導出了二元無規混合物的有效介電常數的普適計算公式。
  18. With consideration of the relation between two distinct topological structures, a simple self - consistent way is used to improve this expression

    並且從二元無規混合物的兩種拓撲結構出發，用自洽的方法改進了該二元無規混合物的有效介電常數計算公式。
  19. By the methods of conformal mapping, the closed - form analytical expressions for characteristic impedance per unit length and relative effective dielectric permittivity are deduced for the three asymmetric cpw ' s, and the analytical expressions of the electric field for asymmetric cpw with conductor backing is derived

    根據本文所提出的模型，推導出了三種結構參數的具體特例，並給出了這些特例的特性阻抗、有效介電常數解析表達式。門）給出了分析有限介質基片厚度非對稱共面波導導體損耗的方法，並推導出其解析表達式。
  20. Firstly, we calculate variationally the binding energy and correlation energy of excitons in finite deep gaas - al0. 33ga0. 67as quantum wells. in the calculation, we consider the effect of effective mass and dielectric constant mismatch in the two materials. the results we obtained are basically conformed to the ones obtained from the previous theory and experiment

    首先，我們計算了有限深gaas - al _ （ 0 . 33 ） ga _ （ 0 . 67 ） as量子阱中激子的束縛能，其中考慮到了阱和壘兩種材料中電子和空穴的有效質量以及介電常數的失配影響，我們計算得到的激子的束縛能及相關能與前人的理論結果和實驗結果基本上相符合。
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