使用继电器、接触器、按钮、空气开关、行程开关等低压电器构成的控制电路称为继电接触控制电路。
Use relays, contactor, button, air switch and travel switch etc low-voltage constitute control circuit called relay contact control circuit.
掌握继电一接触式控制设备的控制线路的检修，是职业技能要求的重要环节。
A very important link that vocational skills require is to grasp overhauling the circuit of relay-contact controlled equipment.
它由触摸屏和PLC等元件组成，取代传统的继电接触器控制装置。
It includes GOT? PLC and other devices. This system replaces traditional relay control system.
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