dissipation factors 耗散因子(7)   耗散因子      For the purpose of researching the mechanisms of losses in piezoelectrics, three dissipation factors, which are dielectric, mechanical and piezoelectric losses, are introduced to describe the losses.      为研究压电材料中三种不同的损失,引入三种耗散因子(介电耗散因子、弹性耗散因子和压电耗散因子)分别用于描述介电损失、机械损失和压电损失的大小。 短句来源      Equilibrium Shapes and Tidal Dissipation Factors of Galilean Satellites      伽利略卫星的平衡形状参数和潮汐耗散因子 短句来源      Dissipation factors in piezoelectric materials and its variation under stress      压电材料中的耗散因子及其随应力的变化 短句来源      According to the expressions of dissipation factors in terms of equivalent circuit parameters,the dissipation factors are obtained in stress experiments.      在对机敏混凝土试件进行的加载实验中,通过测量埋入的压电陶瓷元件的等效电路参数,根据耗散因子同等效电路参数间的关系,得到了压电陶瓷三种耗散因子随载荷的响应特性. 短句来源      It is shown that the dissipation factors perform some regularity with the loads.      加载实验结果和数据误差分析表明,压电耗散因子与试件外部载荷之间存在一定的规律性和较好的稳定性. 短句来源 更多          “dissipation factors”译为未确定词的双语例句      The morphologies and microstructures are characterized. The refractive index is 1.74-1.95, the dielectric constant is 23-26 and the dissipation factors (tanδ) is 2.1×10 -4-2.4×10 -4, respectively.      薄膜的折射率为 1.74～ 1.95 ,介电常数为 2 3～ 2 6,介电损耗(tanδ)在 2 .1× 10 - 4 ～ 2 .4× 10 - 4 之间 短句来源      The pyroelectric coefficient was 3. 6x10-8C/cm2. K at room temperature . The dielectric constants were 15-26 and dissipation factors were from 0. 001 to 0. 05 . The Curie temperature of PbTiO3 film was 515C and its spontaneous and remenent polarization were 6. 54 uC/cm2 and 3. 37uc/cm2 respectively. The coercive field was 54. 8k V/cm0      样品的室温热释电系数为3.6×10~(-8)C/cm~2·K,介电常数为15～26,介电损耗为0.001—0.05,居里温度为515℃,自发极化强度和剩余极化强度分别为6.54μc/cm~2和3.37μc/cm~2,矫顽场强为54.8kV/cm。 短句来源      The average value of dissipation factors (tgδ=ε"/ε') of N-doped carbon coated Fe.Co.Ni nanocrystals were 0.9, 0.31, 0.30, respectively. The results suggest that N-doped carbon coated Fe.Co.Ni nanocrystals are good candidate materials for microwave absorber design.      结果表明:氮杂碳包金属Fe、Co、Ni纳米晶在8.2-12.4GHz频率范围内具有复介电特性,其损耗角正切tgδε=ε"/ε'平均值分别达到0.9,0.31和0.30,显示出氮杂碳包金属Fe、Co、Ni纳米晶对微波具有较好的介电损耗特性. 短句来源      The quasi-geostrophic atmospheric and oceanic equations of momentum and thermodynamics with dissipation factors are used to create a simple coupled ocean-atmosphere model describing the large scale shallow water motion.      文章采用准地转带耗散因子的大气和海洋的动量、热力学方程,建立了一个简单的描写大尺度运动的准地转海气耦台浅水模式,分别在中高纬和低纬地区讨论了海气的耦合效应,分析了耦合低频模(海洋模)的振荡周期随耦合频率和经向波数的变化转征,并由此而说明低频振荡与海气相互作用有关。 短句来源      Experiments of measuring the resonant impedance,the anti-resonant impedance,the series resistance and the quality coefficient of the equivalent circuit of the ceramic on the condition of retaining under the stress,are conducted. And consequently the variation of dissipation factors with respect to the stress is calculated.      提出了通过测量等效电路中各元件参数分别计算三种损失的具体方法,以此方法测量了在不同应力条件下压电陶瓷等效电路中的谐振点阻抗、反谐振点阻抗、串连电阻和品质因素的变化情况并计算出三种损失随应力的变化情况,同时分析了这三种损失随应力变化的机理。 短句来源 更多          相似匹配句对      The factors.      其中外界因素的影响最为重要。 短句来源      Factors of influence on the energy dissipation ratio of stepped spillways      影响阶梯溢流坝消能率的因素 短句来源      It is shown that the dissipation factors perform some regularity with the loads.      加载实验结果和数据误差分析表明,压电耗散因子与试件外部载荷之间存在一定的规律性和较好的稳定性. 短句来源      other factors.      二是制度性因素 ; 短句来源      dissipation of wave energy;      孤波的能量发生耗散; 短句来源 查询“dissipation factors”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   dissipation factors Experimental values of dissipation factors are given for angle-ply structures with a reinforcing angle varying from 0 to 90°. 例句来源       On the other hand, response signatures for agents acting non-competitively on the production and dissipation factors by opposing mechanisms (e.g. 例句来源       The annealed ceramics have higher average phase transition temperatures, lower frequency dispersions, lower dissipation factors and larger aging rates. 例句来源       Dielectric measurements indicate that the sintered glass-ceramics possess dielectric constants less than 5 and dissipation factors less than 0.001 at a frequency of 1 MHz. 例句来源       By annealing the samples in the range of1000-1100°C, the tunability was increased by as much as a factorof seven, while the dissipation factors were decreased to values of0.3-0.5%. 例句来源       更多                    This paper describes an improved micrometer electrode system for the accuratemeasurement of dielectric constants,dissipation factors and the mean thickness of sheetspecimens.By means of the proposed symmetrical four-electrode construction,the li-quid immersion method can be readily adopted at different temperatures.This methodcan also eliminate the influence of great temperature variations upon the measurementresults.In the present paper,a method for the measurement of the temperature depen-denc...             本文提出了一种改进的测微电极,可用来准确地测量高频波段各种温度下介电材料的介电系数、介质损耗角正切和试片的平均厚度。电极系统采用四电极对称结构,可方便地在不同温度下使用排液法,温度变化不影响测量结果,本文还推荐了几种合适的标准液体和其介电系数温度谱的标定方法,从而为液体排代法推广到高频介电温度谱的测量提供了条件。本方法只需测量几次电极间距离的变化和两次谐振电压的比例,就可方便地获得精确的测量结果。其介电系数、介质损耗角正切和试片的平均厚度的测量精度分别可达±0.5%、±7.0%和几微米。 文摘来源          This paper presents a comparative diagnosis on water vapour and kinetic energy for the decay and modification process of a landing typhoon. The results show that the supply condition of water vapour affected strongly the intensity of the landing typhoon. The low-jet between the typhoon and a subtropical high was a primary transport belt of water vapour when the typhoon moved northward. In the decay process the landing typhoon could be considereu as a "quasi- closed" system in kinetic energy. The subgrid sca...             本文对登陆台风Freda的衰减和变性阶段进行了水汽、动能的对比诊断研究,结果表明,水汽供应条件对于台风登陆后的强度变化十分重要。台风北上过程中,副高边缘的偏南低空急流是最主要的水汽输送带。台风登陆后在衰减过程中,可看作是一个动能的“准封闭系统”,次网格尺度效应及摩擦作用是台风衰减的主要因子;变性阶段,在对流层高层有大量的动能输出,次网格尺度效应成了重要的动能源,台风与西风带相互作用时的动能平衡与温带气旋类似。 文摘来源          Cracking-free PbTiO3 films with large area were prepared by Sol - Gel process. A tetragonal crystalline phase had been formed at 550'C annealing for 30 min . The temperature dependence ,film thickness dependence and sol concentration dependence of pyroelectric coefficients were measured. The pyroelectric coefficient was 3. 6x10-8C/cm2. K at room temperature . The dielectric constants were 15-26 and dissipation factors were from 0. 001 to 0. 05 . The Curie temperature of PbTiO3 film was 515C and ...             采用Sol—Gel工艺制备了较大面积不裂的PbTiO_3薄膜,对样品做了不同烧结温度下的X射线衍射实验,经550℃保温30min的样品已形成了单一晶相的PbTiO_3多晶膜。对样品的热释电系数随温度、薄膜厚度和胶液浓度的变化关系研究,发现热释电系数随胶液浓度和薄膜厚度的增加而增大,最后达到饱和。样品的室温热释电系数为3.6×10~(-8)C/cm~2·K,介电常数为15～26,介电损耗为0.001—0.05,居里温度为515℃,自发极化强度和剩余极化强度分别为6.54μc/cm~2和3.37μc/cm~2,矫顽场强为54.8kV/cm。 文摘来源   << 更多相关文摘         相关查询: tidal dissipation factors dissipation factors abstract factors soil factors western factors regulation factors barrier factors various factors stress factors damage factors climate factors  对查询结果不满意

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