大功率的

According to the contour,track,wheel base,the smallest ground clearance,the smallest turning radium,the vehicles weight, the all-up weight as well as the highest speed and so on, union the choosing engine model we can obtain the important parameters of the max power,the max torque, the displacement and so on.

根据轿车的外形、轮距、轴距、最小离地间隙、最小转弯半径、车辆重量、满载重量以及最高车速等参数结合自己选择的适合于该轿车的发动机型号可以得出发动机的最大功率、最大扭矩、排量等重要的参数。

A good home theatre system must be made to handle a lot of volume,resolve dialogue appropriately,reveal all other sound-track information and recreate realistically dynamic information without breaking up.The Dul'cets meet all these criteria,with an additional bonus-they can be used in audio-only applications,covering smoothly the audible frequency range.

一个好的家庭影院系统必须可以承受重放很大功率，准确地还原对白，一气呵成的重现所有其他的轨迹讯息，而且真实还原声音的活力动态，杜希Dul'cet符合所有的这些要求，别外还加一上条：他们具有平滑的频率特性，可以被用于重放Hi-Fi音乐。

The thesis expounds the necessity of application of arc prolong measure in synthetic test,introduces general practices of arc prolong methods and their working principle at home and abroad,and proposes design criteria and parameter calculating method for arc prolong circuit .

论述了合成试验采取延弧措施的必要性，介绍了国内外大功率试验室通用的延弧方法和工作原理，提出了延弧回路的设计原则和参数计算方法，并对影响延弧效能的因素进行了分析，最后叙述了提高延弧成功率的措施以及今后可能出现的问题。

Variable speed system of cycloconverter-fed multiphase synchronous motor is a major area in the development of high-power AC drive system because of its small dimension, large capacity, high torque, high-rate power, wide-range variable speed, low harmonic pollution, and reliable safety. In the low-speed and large-capacity industrial drives, such as rolling mills, winding motors, marine propeller, cement mixer, etc. it will find a wide application in the future.

采用多相同步电动机的交交变频调速系统，具有体积小、容量大、高转矩、高功率比、宽平滑调速区、谐波污染小、安全可靠的特点，是大功率交流调速领域的主要发展方向之一，在轧机，矿山卷扬，船舶推进，水泥球磨机等低速大容量的场合有着广泛的应用前景。

Products used the advanced semiconductor technology, with theimport of original power supply and other key core components, effectively improve the overall performance of the product to ensure products' amplified speed, extend life, and protect the reliability of analysis results in harsh and complex environments Under the experiment.

产品采用国内外先进的半导体技术，配合进口原装大功率电源及其他主要核心部件，有效提高了产品的综合性能，保证了产品的扩增速度，延长仪器使用寿命，并且在更加复杂苛刻的环境下进行实验，也能保障分析结果和系统的可靠性。

Products used the most advanced semiconductor technology, with theimport of original power supply and other key core components, effectively improve the overall performance of the product to ensure products' amplified speed, extend life, and protect the reliability of analysis results in harsh and complex environments Under the experiment .

产品采用国内外最先进的半导体技术，配合进口原装大功率电源及其他主要核心部件，有效提高了产品的综合性能，保证了产品的扩增速度，延长仪器使用寿命，并且在更加复杂苛刻的环境下进行实验，也能保障分析结果和系统的可靠性。

Because the expensive tunable laser is not available in laboratory, the high-luminosity halogen lamp is considered as the multiplex photosource, at results, the cost become lower and the program keep more practicable. A experimental scheme of 16 channels wave demultiplex based on volume holographic technology is designed, and its channel capacity, noisiness, cut-in loss, isolation and storage persistence are analyzed.

采用高亮度溴钨灯代替价格昂贵的大功率可调谐激光器作为波长解复用试验的光源进行设计，有效降低实验成本，设计出基于体全息技术的16通道波分解复用器的实验方案，并分析该器件的信道容量、噪声特性、插入损耗、隔离度以及存储持久性等主要性能指标。

GHz ridge－loaded helical groove slow wave structure with a 20kV electron beam are given and the investigations of the effect of the ridge dimensions and electron beam parameters on the small signal gain are carried out. It is indicated from the calculation results that this type of structure is suitable for use as s SWS of high power, high gain but narrow passband millimeter TWT, of which the 3dB gain bandwidth is 3.4%. In order to increase the bandwidth, the reduction of the ridge gap or the increase of the electron beam current in an allowable range may be useful.

GHz的脊棱加载慢波结构的具体尺寸，并对此结构中小信号增益随脊尺寸的变化情况及电子注参数对其影响进行了研究，计算结果表明：此结构适宜于作为高增益窄带毫米波大功率行波管的慢波线，其3dB增益带宽为3.4%，为了展宽其工作带宽，可以适当减小间隙宽度，也可在一定范围内提高电子注电流。

The status quo of the development of the high voltage high power conversion technology is summarized in chapter 1 and two interrelating technology developments - power switching devices and digital control technology, are introduced. In chapter 2, the topologies of multilevel converters and control schemes are summarized. Moreover, their advantages, disadvantages and application fields are also analyzed and compared.

本文首先在第一章中对高压大功率变流技术研究现状进行了回顾，并对与多电平变流技术紧密相关的电力电子功率器件、数字控制技术的发展情况做了介绍；第二章对目前多电平变流器的电路拓扑和控制策略进行了总结，并将各自的优缺点和应用场合加以分析、比较。

These experimental results indicate that the improved plug-in repeative control scheme combining with the circumfluence R.M.S. compensation method are feasible for inverts parallel operation,which will meet the demand of power single-phase invert-paralleling systems.

实验结果表明，对于单相逆变器并联系统，本文提出的改进型嵌入式重复控制策略以及基于环流有效值的均流补偿策略是可行的，可以满足大功率单相逆变器并联的要求。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。