效率

The results show that the beam-wave efficiency is not sensitive to the velocity spread, but is dependent on the period and depth of the helical corrugations, and that the efficiency in the present experiment may achieve 25.6% by optimizing the helical corrugation parameters.

结果表明：螺旋波纹壁圆柱波导回旋行波放大器效率对电子束速度离散不敏感，而对螺旋波纹开槽周期和开槽深度的依赖性较强；通过参数优化可望把目前实验的效率水平提高到25.6%。

To estimate the quantitative genetic parameters of nitrogen use efficiency, twenty maize single-cross hybrids with varying nitrogen use efficiency were tested at two locations in the North China Plain. At both locations, the hybrids were grown under high (HN, 225 kg/hm^2 N) and low N levels. And no N fertilization on the LN field have lasted two years.

为研究玉米品种氮利用效率相关性状的遗传参数，本试验选择20个具不同氮利用效率的单交种在华北平原的2个地点同期进行试验，氮肥处理设高氮（施氮，折合纯氮225 kg/hm^2）和低氮（不施氮，其地块经过连续2年耕种使氮素耗竭）2个水平。

Furthermore, its working characteristics are studied experimentally and compared with those excited by the only DC glow discharge. Under the action of transverse silent discharge, the laser power, the gas-filled pressure and the fraction of N2in the laser are increased obviously, the laser efficiency is increased, too.

实验表明，由于横向无声放电的作用使这种激光器的激光功率、工作气压和工作气体中氮的比例有明显的提高，激光效率也有所提高，而且放电电流能兼顾最大激光输出功率和最佳效率。

Screen-in screen grid, for my company's latest model of development, may at any time take-up screen, more efficient patent for a new type of network structure, a network for speed and light weight, high strength, sieve Network is the life of the general structure of the Screen 3-5 times superiority, not only can you in a very short period of time to keep the screen Beng-more aggressive and timely replacement of screen, that screener maximum efficiency .

筛机中的筛网网架，为我公司研制的最新型的、可随时张紧筛网的、效率更高的新型实用专利网架结构，具有换网速度快、重量轻、强度高、筛网的使用寿命是一般结构中筛网的3-5倍等优越性，不仅可以使您在极短的时间内随时将筛网绷张更紧，及时更换筛网，将筛分效率提到最高。

The establishment of research management information systems can firstly bring increased time efficiency and, secondly, as part of the offices use of the network to replace the use of disposables, the long term economic benefits are considerable.

从效率上来说，科研管理信息系统的建设，首先带来了时间上的效率提高，其次，由于网络的运用替代了部分的办公耗材的运用，从而长远来看，经济效益是可观的。

Compared with the low absorption efficiencies of a gas of atoms and molecules (less than 10%), it is demonstrated experimentally that a gas of clusters has much higher absorption efficiency. The absorption efficiencies to the laser energy are as high as 90% and 50% for rare gas clusters and hydrogen clusters, respectively.

实验发现，相对于原子或者分子气体喷流对激光的低吸收效率（小于10％），惰性气体团簇喷流和氢分子团簇喷流对飞秒强激光脉冲有非常强的吸收，吸收效率分别达90％和50％以上。

The impacts of definition, complexity, development efficiency, runtime efficiency, extendability and maintainability of applications are considered in the thesis.

通过综合考虑应用程序结构的清晰度、复杂度、开发效率、运行效率、可扩展性和可维护性等多方面的因素，WBDS形成了独具特色的部分允许跨层调用的分层体系结构。

Efficiency of radiant energy conversion It is possible to calculate the efficiency of photosynthesis.

辐射能转换效率计算光合作用效率是有可能的。

If the efficiency of the refrigerator is not high, particularly long-hum, nor particularly large, if the heat pipe vacuum cleaner dust吸掉, it will improve the efficiency of refrigerators, but also to reduce the magnetic field at home.

如果冰箱的效率不高，嗡嗡声就特别久，也特别大，如果用吸尘器把散热管线上的灰尘吸掉，就会提高冰箱的效率，也减低家中的磁场。

Based on a variety of books and materials, foreign or domestic, this thesis deals with the recent development and application, the past, present and future for solar energy and solar cells, analyzes the great senses of solar energy and solar cells for the development of economic, and analyzes their structure photovoltaic effect and conservation efficiency. The writer also elaborates the working principles and application characteristic of solar cell, various factors that may lead to bad conservation efficiency of solar cell. Based on the the working principles and application characteristic of solar cell, emphasizes on some ways of improving photovoltaic conservation efficiency for solar cell, for example: the appropriate thickness of solar cell, the low resistance, the phalanx of solar cell, the film of reduce the reflect of solar rays, and so on, and designs simply the feasible way, then give out the CAD frame chart .

本文是在收集了大量的国内外图书资料的基础上，对太阳能和太阳能电池的广泛应用领域、过去、现在和未来进行了探讨，分析了太阳能和太阳能电池的对我国经济发展的重大意义，阐述了太阳能电池的工作原理和应用特性，论述了影响太阳能电池光电转换效率的因素，重点介绍了几种提高太阳能电池光电转换效率的方法，例如：合适的太阳能电池厚度、降低太阳能电池的串联电阻、采用太阳能电池方阵、采用光伏发电自动跟踪系统、采用减反射膜和折面型抛物柱太阳能聚光器，并对以上可行的方法进行了简单综合设计，实现了 CAD 框图。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。