继电器的接触点就可以执行控制功能。
The contacts of this relay can be used for control functions.
详细分析了交流接触器在不同使用条件下的闭合与分断时触点两端电压与回路电流情况，并研究了AC1～AC4工作制下的控制时序。
The conditions of voltage between contactors and current in main circuit under different using types are analyzed in detail, then designed the control sequences with working mode AC1-AC4.
三是分析在三方关键接触点上商家的具体传播策略及其控制特征。
Third, it discusses the specific communication strategies on the business and its control characteristics around three key points of contact.
经查是与四通阀线圈串联的控制继电器触点接触不良，电阻增大，致使电压降低。
The check is in the series of coil and four-way reversing valve control relay contact resistance increases, the bad, the contacts the voltage reduced.
检查电器控制线路并清洁其接触点，查看各气压，气阀；气动控制器是否正常。
Check the equipment controlling circuit and clean the contacting places. Check the pressure and valve, and if the pneumatic controller is working normally.
传统的抽油机控制柜大都采用继电接触系统，通过机械式触点闭合、断开实现电路导通或断开。
The traditional control cabinet of oil-pumping unit is using continuous electricity contact system through the mechanical touching point by closing and opening to achieve the circuit's "on" and"off".
断路器和接触器应至少有一对备用触点以便向控制系统传送信号。
Breaker and contactor should have one pair of spare contacts so that signals can be sent to the control system.
断路器和接触器应至少有一对备用触点以便向控制系统传送信号。
Breaker and contactor should have one pair of spare contacts so that signals can be sent to the control system.
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