功率损耗

The power factor, energy efficiency, electronic loss, lumen/w. and crest factor of 2×36 W electroinc ballasts based on these two dimming methods are recoded and Compared over a wide dimming range.

在宽的调光范围内，记录并对比了基于这两种调光方法的2×36W电子镇流器的功率因数、能量效率、电子损耗、单位功率光通量以及峰值系数。

After analyzing the general power convenor ,a soft switching converter power will be introduced to depress and remove its ripples and wastage .

在分析常用功率变换器的基础上，引进软开关技术，用来降低电机的损耗和脉动。

A circle is placed at the launch point to improve the interaction between the electron beam and the fields supported by the slow wave structure, thus to control the beam current density at the launch point, and to minimize the loss of the electron beam energy. The inaner radii of the extractor vanes are slightly larger than those of other SWS vanes, which increases the axial group velocity and enhances the microwave output power and efficiency. Implementation of two RF choke vanes stops the leakage of microwave pulse power toward the diode, and makes the device more compact than the conventional MILO.

该振荡器在阴极电子发射起点加圆环，控制此处电子束的发射密度，来减少电子能量的损耗，改善束－波互作用；逐渐加大慢波结构的后两个叶片的内半径，增大微波群速度，便于谐振腔中的能量输出，提高微波输出效率；采用两个扼流片有效地阻止了微波功率向二极管区泄漏，相应减小了器件的尺寸。

By using soft-lithography the 1×8 polymeric power splitters were prototyped and the measurement was in a good agreement with the calculated result.

采用极具优势的软光刻技术印制成功高聚物1×8光功率分配器，在实际的测量中所得损耗结果与模拟仿真符合较好。

In Chapter 3, a novel Quasi Three dimensional Finite Differential Time-Domain Beam Propagation Method (Q-3D-FDTD-BPM) is firstly proposed for analysis of MMFG.

因此。在弯路多、损耗大、多节点、光功率分路频繁的短距离通信网络系统中MMFG器件具有更多地灵活性和高性价比。

Low-loss, low-ESR polypropylene capacitors provide crystal-clear high frequencies, while wire-wound precision resistors with integral heatsink ensure filter stability at high input power.

低损耗，低ESR电容器聚丙烯提供水晶般清晰的高频率，而钢丝缠绕精密电阻组成的散热器与确保稳定的过滤器在高输入功率。

An explicit analytical solution of the threshold pump power of the laser has been derived based on rate equations which contain the attenuation coefficients of the pump and laser radiations as well as the major contribution of the re-emission of the upper level atoms to the pump wave by using the analytical solutions. An analytical solution of the minimum fiber length required for the onset of the oscillation is presented. In addition, the analytical solutions describing the variations of the density of the pump radiation and upper laser level population along the fiber length have also been given.

从速率方程组出发，在不忽略光纤损耗系数和保留再发射项主导部分的近似条件下推导出了双包层光纤激光器阈值泵浦功率的显函数解析表达式，得到了光纤激光器产生振荡所需的最小光纤长度的显函数解析解；还给出了泵浦光子数密度和上能级粒子数密度沿光纤方向随光纤长度变化的显函数解析解。

Heating principle of intermediate frequency induction furnace and some problems in shunt-wound power source spacer circuit were discussed.

对中频感应炉的加热原理和并联型电源逆变电路存在问题进行了探讨，并就此逆变电路存在问题进行了改进，同时，采取措施减少中频供电线路的损耗，实践表明：改进后的逆变电路能全功率输出以及启动能力提高，且节能效果显著。

As the field of microwave communications professional manufacturer of passive components, Bo Xiang Electronics since its inception is committed to research and development, production and marketing of power splitter, coupler, Combiner, diplexers, filters, power load, such as small and medium-sized 6 Series more than 100 kinds of products, widely used in GSM, CDMA, PHS and other communications networks a variety of distribution systems to low-loss, wideband, high reliability, waterproof dust characterized, its production, processing capability, stable performance , delivered quickly and cost-effective, at present is the biggest kind of passive components, one of professional supplier in 2005, output value of more than 6000 million.

作为微波通信领域的无源器件专业制造商，博翔电子自成立以来致力于研发、生产和销售功分器、耦合器、合路器、双工器、滤波器、中小功率负载等6个系列100多种产品，广泛应用于GSM、CDMA、小灵通等通讯网络的各种分布系统中，以低损耗、宽频带、高可靠性、防水防尘为特点，其生产、加工能力强、性能稳定、交付迅速、性价比高，目前是国内该类无源器件最大的专业供应商之一，2005年产值6000多万元。

The characteristics of different implementation of the fiber-optic pulse replicators based on different techniques are compared according to the different performance requirements of insertion loss, periodicity and power stability of the output pulses in various applications.

针对常用的多路高速光脉冲复制系统可能的实现形式进行了研究，根据各种应用中所需的插入损耗、输出脉冲周期性与功率稳定性等性能要求，对多种光纤光脉冲复制结构的特点进行了分析比较。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失