优缺点

Then, it compares the characteristics of many kinds of variable-speed and constant frequency wind turbine and concludes that the direct-driven PMSG wind turbine is the best choice.

接着比较了现存的各类型变速恒频风力发电机的优缺点，进而得出低速永磁同步发电机直接驱动型风力发电机的优越性。

This paper compared these three kinds of methods and gave a brief description of their advantages and disadvantages, practical, and development prospects. Besides, development direction of the rapid test of pesticide residues in our country's.

将这3种方法进行了比较，简要叙述了它们的优缺点、实用性及发展前景，并分析了农药残留快速检测技术在我国的发展方向。

It figures out that the VI technology will be the significant direction of the automation test system and electronic measure instrument in the future.

介绍了虚拟仪器的研究现状、基本概念、主要特点以及虚拟仪器的软、硬件结构，分析比较了各种硬件系统的优缺点。

The working methods and principles of the ditching machine coming from home and abroad are analyzed and compared in this paper. By combining the present planting style of rape in the southern area of our country and the large scale usage of small rotary cultivation machine, the advantages and disadvantages of ditching mode between former and post-position are compared. Finally, the ditching components of disc pattern are designed by adopting the post-position to realize the mechanization of ditching in rape planting.

本文分析比较了国内外开沟机械的工作方法和原理，结合我国南方现有油菜种植方式及现有小型旋耕机大量使用的现状，比较了前置和后置式开沟方式的优缺点，采用后置式开沟方式设计圆盘式开沟部件，实现油菜种植机械化开沟和覆土。

According to the drag scraper and scooptram ore removal way in spontaneous caving of Tongkuangyu Mine, the advantages, disadvantages and suitable conditions of drag scraper and scooptram are elaborated.

根据铜矿峪矿自然崩落法电耙出矿与铲运机出矿应用实践，阐明电耙与铲运机出矿的优缺点及适用条件，论述自然崩落法出矿方式的选择依据，并指出出矿过程中应注意的问题。

And also introduce the basic theory of dewatering of confined water and the processing method of the gutter drainage and well point precipitation.

本文中介绍了承压水降水的基本理论和明沟排水与井点降水等处理方法，以及各种方法的优缺点和适用条件。

Based on the comparison between several present schemes controlling DC motor with PWM, a design scheme for drive circuit fit to EPS is presented, in which both low side and high side are N-MOS and high side is either in fully-off or fully-on state while low side is controlled by logic circuit.

在分析电动助力转向系统电机驱动电路性能和可靠性要求的基础上，对比常用的PWM控制直流电机的优缺点，提出了电动助力转向系统驱动电路的设计方案：上、下管均采用N沟道MOS管，上管常通或常闭，下管由PWM逻辑电平控制。

In this paper, biomechanical studies on injury of arterial, lungs, heart and fracture of rib are reviewed systematically, and several research methods, including accident investigation, animal experiment, dummy testing, and mathematical modeling are described.

在对创伤类型和研究方法的现状分析中，建议作者考虑增加对各种方法和技术的优缺点分析，适应条件和临界条件的说明，若能对同类方法进行比较分析更佳。3。文中部分文字叙述需再斟酌。

The major work is as follows: I make the comparing test to check up the two acoustic emission theory's fundamental hypothesis and get that merit and limit of two method, which is help to find the best applying area for two acoustic emission method.

主要完成的工作如下：通过对比试验来验证参数式声发射技术和模态式声发射技术的理论，分析两种声发射技术的优缺点，找到各自最佳的应用范围。

Based on the findings of academes home and abroad both in modern logistics management and in smart supply chain, it then puts forward the current situation and problems of logistics management in the middle and small-sized manufactories.

并结合21世纪先进制造模式的发展需求、电子商务等因素，在分析当前我国制造企业的物流模式——&自营物流&和发达国家的企业物流模式——&第三方物流&的优缺点的基础上，提出了一种比较适合我国中小型制造企业的物流管理&混合&模式。

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。