查询词典 vacuum breaker

The academic analysis is carried on as the same time as the design on the spring operating mechanism of the vacuum circuit breaker is accomplished in this thesis.

本论文在完成真空断路器弹簧操动机构设计的同时，进行了较为系统的理论分析。

Used as the insulating medium and high vacuum circuit breaker arc-quenching media.

用高真空做为绝缘介质和灭弧介质的断路器。

The establishment of products from the model and finite element analysis, respectively, from the stress and strain, and other aspects of analysis and this analysis, design and manufacture die as the theoretical basis and can shorten the vacuum circuit breaker box product development cycle and reduce production costs .

从建立产品的建模型与有限元分析，分别从应力、应变等方面进行分析，并以此分析结果，作为模具设计制造的理论依据，同时可缩短真空断路器箱体产品开发周期，降低产品生产成本。

The characteristics and the advantages of the VD4 Vacuum Circuit Breaker s are de-scribed,as well as its type test.

本文分析了断路器开断小电感性电流时产生截流过电压的原理，提出了抑制过电压的方法，论述了 VD4真空断路器的结构特点和优越性能，介绍了其完整的型式试验，总结了真空断路器的操作要领。

The paper describes the selection principle of primary schemes for C-GIS and determines the general structure arrangement by comparing different elements and box structure, analyzes the insulating characteristics of SF6 gas and calculates the SF6 gas clearance and along surface insulation. It puts forward the factors that should be considered and strength analysis methods when designing gas chamber structure and analyzes the reasons of influencing the temperature rise of gas chamber and offers the ways of radiating. The vacuum circuit breaker and three-position disconnector are designed for C-GIS and special micro-computer controller for the three-position disconnector is developed. On the basis of new type sensors, suitable control and protection system for C-GIS is suggested. The type test items for C-GIS and its internal elements are introduced to prove that the development is successful.

本文论述了C-GIS产品的一次接线方案选择的原则，在比较各种元件构成及箱体结构的基础上确定了产品的总体结构；分析了SF6气体的绝缘特性，并对SF6气体间隙及沿面绝缘进行了工程计算；阐述了气室设计应考虑的主要因素及强度分析方法，对影响气室温升的原因进行了剖析，并提出散热措施；介绍了C-GIS用真空断路器及三工位隔离开关的设计技术；运用微机技术开发了专用的三工位隔离开关控制器；在阐述新型传感技术的基础上，提出了适用于C-GIS的控制和保护系统；简述了C-GIS产品及内部元件的型式试验项目，证明本产品的研制是成功的。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。