NF A85-020-中文
电弧焊接设备,电源,检查和测试,静外特性记录,测定效率及功率因数,类型测试
Arc welding equipment, power sources, examination and testing, recording of static external characteristics, determination of efficiency and power factor, type testing
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Arc welding equipment, power sources, examination and testing, recording of static external characteristics, determination of efficiency and power factor, type testing