查询词典 conversion

A detailed analysis of the main circuit introduction, control method and working principle of the direct-drive wind energy conversion system are given to introduce the two important parts a of this paper: First part is the control method of the multiple boost convertor, the important instantaneous current control method of this paper is given through the analysis of the main circuit structure, control method and working principle. Then a steady-state analysis for low-frequency, a high-frequency component analysis, and a closed-loop tracking performance analysis for dynamic response are provided to analyze the method proposed; And the second part is the control method of invertor.

在系统变流器整体结构分析的基础上，引出本文重点研究的两个变流环节的控制：第一部分是系统升压斩波器的控制，通过分析相关主电路结构、原理，建立了数学模型，引出本文重点研究的瞬时值控制策略的概念和具体实现，并对升压斩波器的瞬时值控制策略进行了详细的高频、低频模型分析和稳态、动态性能分析；第二部分是系统并网逆变器的控制，通过对逆变器主电路的数学建模和控制要求分析，研究了并网逆变器的瞬时值控制策略，包括电感电流控制内环和直流电压控制外环的具体设计和实现方法。

The critical ionization process is a quite general mechanism for the conversion of the kinetic energy of a rapidly streaming gas into ionization and plasma thermal energy.

关键的电离过程是一个相当普遍的机制转换的动能迅速流气体电离和等离子热能。

It was found that VAC can be smoothly photografted onto LDPE film with"film combination"system, e. g. conversion percent and grafting efficiency are 70％ and 76％, irrespcetively, with UV intensity of 5400μw/cm〓 and irradiation time of 3min. The reaction orders of polymerization rate to monomer concentration and photoinitiator concentration are about 1 and 0.76, irrespectively, showing that chain transfer reaction takes place with much ease in VAC/LDPE system.

发现利用本文所设计的方法可将VAC快速地接枝在LDPE膜表面，如在光强为5400μw/cm〓，光照3min时，转化率和接枝效率可分别达到70％和76％；聚合反应速率对单体的反应级数约为1，而对光引发剂的反应级数为0.76，说明VAC光接枝聚合中链转移反应占相当大的比例。

The incorporation of H〓 can increase the conversion of isobutane.

在反应气中引入H〓，可提高异丁烷转化率。

The catalyst on calcination temperature of 400℃ had the highest conversion of isobutylene and the catalyst on calcination temperature of 500℃ had the highest selectivity of methacrolein .

焙烧温度为400℃的催化剂异丁烯的转化率最高，焙烧温度为500℃的催化剂甲基丙烯醛的选择性最高。

Result showed that conversion of isobutylene reached 80% and selectivity of diisobutylene was 90% when reacted at 180 oC with mass airspeed of 3h-1 by self-made R2 catalyst.

利用分子筛催化异丁烯合成二聚异丁烯，在固定床反应器中考查了温度、空速对异丁烯齐聚反应的影响。

The processing route, technology and characteristics of the MTBE unit in Harbin Refinery are presented. The main operation factors, such as catalyst packing and performance, reaction temperature and pressure, and the effects of alcohol/alkene ratio on isobutylene conversion and MTBE quality, are discussed. The problems occurred during production and their solutions are also summarized.

介绍了哈尔滨炼油厂MTBE装置的工艺路线、新技术的应用及特点；催化剂的装填及应用情况；总结了生产过程中遇到的一系列问题及解决办法；探索了平稳生产的新徐径，以保证装置安全、平稳、长周期运行；同时对反应器操作温度、催化蒸馏塔操作压力、原料中醇烯比等因素对异丁烯转化率及MTBE产品的影响做了简单的总结。

The system also adopts 16-bit conversion chip ADS8364 of TI company which realizes transformation of multi-channel signals simultaneously and guarantees the isochronism of data collected.

根据系统设计的基本要求，系统中采用三星公司的S3C44BOX，该芯片具有高速度、低功耗、低成本、功能强、特有16／32位双指令集等诸多优异的性能，成为系统的主控制器。

One of a group of enzymes that catalyzes the conversion of one isomer into another.

血小板释放的一种酶，能在血液开始凝结时将凝血素转化为凝血酶。

Under the optimal conditions, the conversion of reactant and the yield of H_12MDA are both as high as 100% with content of trans-trans isomer being lower than 10%.

在优化的反应条件下，可以实现MDA的转化率和全加氢产物收率均是100%，反-反异构体含量低于15%，最低可以达到5%。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。