A very important link that vocational skills require is to grasp overhauling the circuit of relay-contact controlled equipment.
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.
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。
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