【单选题】
When the electrode cable is fastened to the negative pole of the generator and the work to the positive pole, the polarity is positive, or more commonly referred to as straight polarity. 翻译为:当电极电缆被连接在发电机的负极,且工件接正极时,极性是正的,或按更常规的说法叫做负接。
参考答案:
参考解析:
举一反三