By increasing or lessening the hours of darkness in each day, the scientists have been able to turn plant growth off and on like an electric switch.
用增加和减少每天黑暗小时数的方法，科学家已经能够控制植物生长，如同控制一个电器开关。
The electric switch machine is an essential part of the railway signal system and plays an important role in guaranteeing the safety of the trains and promoting the transportation efficiency.
电动转辙机是铁路信号系统的关键设备，对保障行车安全、提高运输效率具有极其重要的作用。
Electrical contact also called contact or contact junction, is the contact component of electric switch, instruments and meters and so on, which takes on the task of current on or off.
电触头亦称触点或接点，是电器开关、仪器仪表等的接触元件，担负着通断电流的任务。
The invention solves the problems that an electric switch contact is burnt by sparks and is damaged.
本发明解决了电器开关触点被火花灼烧、损坏问题。
It adopts the digital code signal to control the gear changing and the states of the electric switch.
电子选发器采用数码信号控制换档和电子开关选通，从而克服了机械选发器的弊端。
The invention relates to an electric switch contact protection scheme which belongs to the technical field of electric switch manufacture.
本发明所述的一种电器开关触点保护方案，属于电器开关制作技术领域。
Auto inspect and control system (AICS) in intelligent building can integrate electric switch, electric fan, water pump, elevator and lamplight etc.
智能大厦要求对楼宇内分散的电闸箱、风机组、电梯、水泵、灯光等进行集中的自动检测和控制。
In the main circuit, the inverse parallel couple SCRs (silicon-controlled rectifier) are used as a electric switch, switching the transformer of resistance spot welding.
主电路以反并联的晶闸管作为控制开关，控制焊接用的电阻点焊变压器通电与否。
A strong engineering background is requested on this project, the research results on the mechanical design and development of electric switch has an important practical value.
本课题研究的内容具有很强的工程背景，研究成果对机械式电开关的设计开发具有重要的实用价值。
Though analyzing the disadvantages of the brush motor in ZD6 type Electric Switch Machine, this paper introduces the replacement of brush motor by brushless DC motor and specific reliability measures.
分析了ZD6型电动转辙机有刷电机的缺点，介绍了无刷直流电机取代有刷电机的方案及可靠性措施。
Though analyzing the disadvantages of the brush motor in ZD6 type Electric Switch Machine, this paper introduces the replacement of brush motor by brushless DC motor and specific reliability measures.
分析了ZD6型电动转辙机有刷电机的缺点，介绍了无刷直流电机取代有刷电机的方案及可靠性措施。
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