短语词组短語three spot resistance welder 三點銲機laser spot -welder 激光點銲機micro spot -welder 微型點銲機spot melting welder 點熔接機spot -welder and solderer 點銲及銲接機spot resistance welder 點電阻銲機工;現貨電阻銲工;點電阻銲接工bench type spot -welder 台式點銲機 返回 spot welder