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

    掌握继电接触式控制设备控制线路检修职业技能要求重要环节

    dict.cnki.net

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

    掌握继电接触式控制设备控制线路检修职业技能要求重要环节

    dict.cnki.net

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