损耗

The present work solves the ELD problem with Lineflow constraints through effective appli- cation of GA, considering the system transmission losses, power balance equation as the equality constraint, limits on the active power generations of the units and limits on currents in different lines as the inequality constraints. Two test systems, i.e.

目前的工作，解决了在ELD 问题lineflow的限制，通过有效的应用-阳离子遗传算法，考虑到该系统的传输损耗，权力的平衡方程作为等式约束，限制，有源电力几代人的单位和限制电流在不同的线路（ lineflow限制）作为不等式约束。

This system in this paper has been on site tested. It has showed high efficiency, stability and accuracy to on line monitor dielectric loss, leaking current and equivalent capacitance for transformer bushing.

经过现场测试表明，设计的在线监测系统对变压器套管的介质损耗、泄漏电流、等值电容的监测是有效的，其稳定性和精度较高。

It shows high efficiency, stability and accuracy to on-line monitor dielectric loss, leaking current and equivalent capacitance for transformer bushing. And so dose the gas solved ir oil on-line monitoring system, in a word, it can be considered as the reference to diagnose the insulation status of transformer.

现场的运行分析表明，设计的在线监测系统对变压器套管的介质损耗、泄漏电流、等值电容的监测是有效的，变压器油中六种溶解气体的监测结果较稳定，可以作为变压器绝缘状态的参考依据。

In Chapter 2,the polarization and loss mechanism of fruit in the alternating current arestudied,and dielectric parameters such as dielectric constant、equivalent impedance andequivalent capacitance are put forward to analyze the interaction between fruit internalquality and alternating current.

第二章 研究了水果生物介质在交变电场作用下的极化和损耗机制，提出了复介电常数、等效阻抗及等效电容几个相互联系又有所区别的电特性参数是研究交变电场与水果相互作用的基本参数。

Key words fast-pulse transmission line; equivalent distributed capacitance model; matching method; numerical computation

实际情况中，N个负载电容沿传输线均匀分布，且传输线的总长度不是很长，即传输损耗在可接受的范围内，2 匹配计算方法

an equivalent model of Al electrolytic capacitor has been studied in this paper. The change law of the equivalent serial capacitance, dissipation factor and impedance of Al electrolytic capacitor has been discussed at different frequencies with Agilent4395A Impedance Analyzer.

研究了铝电解电容器的等效模型，讨论了铝电解电容器在不同频率下，其等效串联电容、介质损耗因子、阻抗随频率变化特性，采用Agilent4395A阻抗分析仪测量了铝电解电容器参数、阻抗-频率特性等。

As the emission spectrum of Erbium ions covers 1550nm, which is the low loss window in fiber optic communication, the study on EDFA and fiber laser is crucial for the development of technology of fiber optical communication.

由于铒离子的发射谱覆盖了1550nm的光纤通信低损耗窗口，因此对掺铒光纤放大器及激光器的研究将对光纤通信技术的发展起着举足轻重的作用。

The estimative reliability model involving the residual life of the high temperature boiler pipe of steam-generator has been established by using of reliability theory and fraction criterion of life loss.

利用可靠性理论和寿命损耗分数准则，建立了蒸汽发生器高温炉管的剩余寿命可靠性预测模型，并应用实例对不同模型进行了对比分析，确定了蒸汽发生器高温炉管剩余寿命可靠性预测的准确方法，可为蒸汽发生器高温炉管的管理和使用提供参考依据。

Based on ANSYS and SYSNOISE software, How the thickness, stiffness, boundary conditions, material density, elastic module and damping factor of viscoelastic structure to affect the sound radiation is discussed in the paper, then some useful conclusions are drawn from them, which will give engineers a guideline to choice the optimization damping.

最后，本文对粘弹性阻尼夹层板结构的声辐射进行了计算，并研究夹层板结构的厚度、加筋方式、边界约束条件、板材、厚度、材料弹性模量、阻尼材料损耗因子、阻尼层密度等参数对声辐射产生的影响并进行比较，得出了一些有益的结论，为最佳阻尼的处理提供了一定的依据。

While a genuine heart is never easy to come by, this unique shape has become one of the most popular cuts. Several years ago Ferri held a Perfect Fancy Cut Diamond Show.

最初一颗钻石晶体不切磨成圆，是因为不适合，如果硬是要切磨成圆形，原石的损耗太多，不符经济原则；於是依其原石情况，在最具效益的情况下，将它们切成各种形状。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。