启动元件

不同TiO2晶型对PTCR启动元件恢复特性的影响

The Influences of Different Crystalline Structure TiO 2 Powders on PTC Starter 's Resume Time

今后研制高性能启动元件所要解决的关键问题是进一步提高材料在整个PTC区域内的平均温度系数。

The future key to solve this problem in making excellent starting component will be further elevating average temperature coefficient of material resistivity in whole PTC region .

研究了材料组成、工艺参数及电压效应对PTC启动元件温度系数αT的影响，发现材料组成、工艺参数以及TiO2原料的晶型结构对αT均有较大影响。

Effect of material composition , technological parameters and electric pressure on temperature coefficient of PTC compressor-starting component has been researched . It is observed that the material composition . technological parameters and crystalline structure of TiO_2 have significant influence on α T.

在此基础上，设计了由壳体、NLG-1灭火剂、动力能源、启动元件及火灾自动识别、自动报警系统组成的灭火装置，并研制或合理选择了相应结构元件。

Then the fire extinguishing equipment including shell , NLG-1 powder extinguishing agent , power agent , startup component and automatic fire alarm system was designed and developed .

三相同时刻采样值高灵敏启动元件

High sensitive starting element based on three phase simultaneous sampling values

基于小波变换模之和的奇异性检测启动元件算法

Singularity detection starting element algorithm based on wavelet transform modulus sum

线路微机保护启动元件及保护方案的探讨

The Pickup Unit and Protection Scheme Of Micro processor-Based Transmission Line Relaying

基于形态梯度与小波变换模之和的行波启动元件

Traveling-wave starting algorithm based on morphological gradient and wavelet transform modulus sum

基于电流综合矢量的高灵敏启动元件

A New High-Sensitivity Starting Element Based on Current Comprehensive Vector

用小波原理构成继电保护启动元件的研究

Research on Forming Start Component of Relay Protection by the Principle of Wavelet Analysis

行波启动元件的算法研究

Study of starting algorithm using traveling-waves

行波启动元件是超高速保护和行波测距中必不可少的重要组成元件。

The traveling-wave based starting element is very important for ultra-high-speed protection and traveling-wave based fault locator .

功率微分启动元件

Differential power starting Element

对于瞬时值启动元件，由于干扰点影响了浮动门槛的值，有可能使保护推迟启动；

To instantaneous value 's starting component with threshold value 's fluctuating , the protection 's operation may delay ;

以行波法测距为主，以阻抗法为辅并兼作启动元件可进一步提高装置的可靠性。

The reliability of fault locationcan be improved further by combining the travelling wave method with the impedance one .

探讨了用小波分析原理构成微机线路保护启动元件的方法。

A method , which forms start component of microprocessor based transmission line relay protection by the principle of wavelet analysis is discussed .

对继电保护启动元件的一个基本要求是能反映各种故障，并且灵敏度要高。

One basic requirement to starting element of relay protection is that it has high sensitivity and can reflect all kinds of faults .

提出了基于小波变换模极大值的电流行波故障启动元件、故障选线元件和故障选相元件。

On this basis , a ' fault start element ' , a ' fault line select element'and ' fault phase select element'are proposed .

作为预防电力系统稳定运行破坏，电站紧急停机或进行消能制动的快速启动元件。本文介绍功率微分启动元件的工作原理、结线、某些试验结果及简单结论。

In this paper , the principle of operation of the differential power starting element , the electric circuits and the result of experiment are discussed .

现有微机保护装置的启动元件存在着高阻接地和缓慢发展性故障情况下灵敏度不足的缺点，振荡情况下可能产生误启动，并且不能识别振荡中再发生故障的情况。

Now the commonly used starting elements are insensitivity to the slow expansibility faults , and high earth resistance faults are easily affected by power system swing .

通过对微机保护中常用突变量启动元件的分析讨论，提出利用小波原理构成保护系统的启动元件。

Through discussing the pickup unit of abrupt signals used commonly in the microprocessor-based protection , the thesis proposes the pickup unit of relay protection by the principle of wavelet analysis .

该文得到以下几点结论：对于动作量是相量的启动元件，由于干扰点的影响，可能使保护误启动；

Based on above study , this paper comes to the conclusions that with disturbance point 's influence , to starting component which the operating value is a vector , the protection may false ;

使用1.2Ω的镍铬丝点火头作为启动元件便于实现系统自动控制，也能有效避免杂散电流的干扰，确保系统安全。

The Ni-Cr ignition component 1.2 Ω in resistance could be used as a better startup component , which was propitious to automatically control , effectively avoid the interference of unstable current and to insure system security .

在此基础上，研究了将小波变换应用到无故障跳闸启动元件和判据判别的可行性，结合小波分析原理与无故障跳闸判别原理，提出了相关的判据。

On this basis , the study will be applied to the wavelet transform trip trouble-free start components and determine the feasibility criterion , combined with the principle of wavelet analysis and non-fault tripping discrimination principle , proposed the relevant criterion .

在保护方案设计中，借鉴和应用了近年来在保护原理研究中的新成果，主要包括基于序补偿电压模值比较的方向元件、三相电流综合突变量启动元件、新型故障选相元件等。

In this thesis , the research of protection principle is used for reference , such as a sequence directional element based on compensating voltage , a high sensitive starting element based on three phase simultaneity sampling values , a novel fault phase selector .

与激活序列1（as-1）同源的启动子元件广泛分布于植物防御相关基因和一些植物病原基因的启动子中，对防御相关基因的激活起着重要作用。

Activation sequence-1 ( as-1 ) cognate promoter elements are widespread in the promoters of plant defense related genes as well as in plant pathogen gene promoters , playing important roles in the activation of defense-related genes .

真核蛋白编码基因核心启动子元件

Core Promoter of Eukaryotic Genes

大肠杆菌启动子特征元件对启动子识别的影响

The Influence of E. Coli Promoter Feature Elements on Promoter Recognition

动物乳腺生物反应器是利用动物乳腺特异性启动子调控元件指导外源基因在乳腺中特异性表达，并从转基因动物奶液中获取重组蛋白。

Mammary gland bioreactor is a useful biological system which expresses foreign genes in the mammary gland and produces functional pharmaceutical proteins in milk .

干式离合器作为一启动和换档元件，在传扭能力安装空间和操纵力等方面进一步发展后将能适应新的要求。

The dry clutch , as the accessory starting and shifting component , can be adapted to new requirements through developments regarding torque capacity , installation space and operating forces .