软

Remember to unmount the floppy before removing it from the drive.

记得在将软盘取出软驱前一定要先卸载软驱。

In this paper, the basic principle and the power factor of conventional SERDS are discussed. Aiming at its shortage of low power factor, boost chopper type SERDS is adopted. The equivalent circuit of the new scheme is built up, and then vector diagram is used to analyze the power factor of the system, also the harmonic distortion of the system is discussed. The experiment device is established base on a 380F/7.5 kW induction motor and a passive soft switching scheme is applied in order to improve the working condition of IGBT. At last, the experimental results are shown.

本文在分析传统串级调速原理的基础上，对系统的功率因数进行分析；针对传统串级调速系统功率因数低的缺点，采用升压斩波式串级调速系统加以改进；建立了升压斩波式串级调速系统的等效电路并采用向量图法对该系统的功率因数进行详细分析；分析了系统的谐波情况；构建了以7.5kW／380V电机为调速对象的升压斩波式串级调速系统实验装置，给出相应的实验结果；针对斩波器中IGBT处于硬开关状态的缺点，应用无源无损软开关技术予以改善，包括对软开关电路工作原理的分析、参数的设计并给出相应的实验结果。

This text introduce a sort of new pattern soft switch PFC circuit .First, analyze the develop course of the on-off power supply. Second, relate the harm of humorous wave to the commonality electricity net. Third, present the topology and the principium chart of the soft switch PFC and analyze it .At last ,set the parameter and simulates the converter of with matlab simulation. more over ,get the hold of well voltage and current wave , minish the spoilage of the circuit, enhance the efficience of the circuit, meet the demand of the miniaturization and viridity.

本文引入了一种新型的软开关PFC电路，首先分析了开关电源的发展历程，然后讲了谐波给公共电网造成的危害，再给出了这种软开关PFC的电路拓扑及原理图并对其工作原理进行了分析，最后对其参数进行设置在MATLAB软件进行了仿真，并得到了良好的电压电流波形，而且减小了电路的损耗，提高了电路的效率，实现了小型化，绿色化的要求。

The emulsion characteristics and properties of PU films were studied by means of rotational viscosimeter,Autosizer ,tensile tester and atomic force microscope.

通过粘度测定、粒度分析、力学性能和耐水性能测试、原子力显微镜分析，研究了软段类型、软段分子量对乳液及其胶膜性能的影响。

Being one of the earliest certified software enterprises,quite a few of Waygoing's products acquired software copyright and software copyright and software product registered certifications.

伟功自主开发的产品有："HCA软交换系统"、"IP网守系统"、"VoIP电话系统"和"MG媒体网关"、"waygoing网络电话"、"IP多媒体软电话"等，经信息产业部电信研究院等相关权威机构专家的评定，系统及产品已达到国际同类项目的先进水平；一些项目2002年即被上海市科委认定为上海市高新技术成果转化项目，以及获得科技成果认定证书并被纳入上海市政府信息技术创新计划；多项产品获得了软件著作权和软件产品登记证书，是上海市早期认定的软件企业之一。

This machine can wind up soft f¨ms.suitable for use in the production lines of various soft f¨ms.

这款机型主要用于软膜生产线中的卷绕，适合配套软膜生产线。

Admission examination: the spirit of soft, clear consciousness, nutrition, poor growth, weight loss significantly, weight 23kg, moderate anemia appearance, and the lungs have not heard a clear wet and dry rale, abdomen soft, upper abdominal tenderness under Xiphoid, Cullen and lower abdominal tenderness light, I no obvious abnormalities

入院时查体：精神软，神志清，营养发育差，消瘦明显，体重23kg，中度贫血貌，两肺未闻及明显的干湿罗音，腹软，上腹部剑突下压痛，脐周及下腹部轻压痛，余未见明显异常。

Methods:Sparfloxacin sodium was synthesized in alkaline condition with sparfloxacin, and then sparfloxacin sodium react with zinc sulfate to sparfloxacin zinc;Sparfloxacin zinc ointment was prepared with vaseline and lanolin as drug excipient and the concentration of sparfloxacin zinc was analyzed with ultraviolet-visible spectrophotometer;Burn patients were treated with sparfloxacin zinc ointment and other routine techniques.

用司帕沙星做原料，在碱性条件下反应生成司帕沙星钠，司帕沙星钠再和硫酸锌反应生成司帕沙星锌：以凡士林和羊毛脂为基质制备软膏剂，用分光光度法检测主药的含量，以临床烧伤患者为使用对象，司帕沙星锌软膏剂配合其他常规治疗方法治疗烧伤疾病。

With the mine scale enhance and the mine toward deep level, the problem of the timbering and the maintenance of soft rock roadway is becoming more aculeated. It is the key of the mine toward deep leve and the safety mine Whether can we solve the problem of soft rock roadway timbering.

随着矿井开采规模的加强和开采向纵深发展，软岩巷道的支护与维护问题显得越来越突出，能否解决好软岩巷道的支护等问题，是煤炭开采向纵深发展和安全生产的关键。

For many years, relying on acuminous market awareness and in line with the enterprise spirit of diligence, solidarity, innovation, transcend and the goal of pursuing high technology, high quality and high benefit, we have made big progress in High-Tech field and now possess our own brands and independent intellectual properties.

奥拓公司已通过国家高新技术企业和软体企业认定，获得ISO9001国际品质管理体系认证，通过国家3C认证和ETL、CE等国际认证，是深圳市高新技术产业协会理事单位、深圳软体协会常务理事单位、国家LED显示屏专业委员会会员单位，在同行业中享有众多荣誉与资质。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。