spot-welder的用法和样例：
词汇搭配
- rocker arm spot welder 摇臂式点焊机...
- induction spot welder 感应点焊机
- duplex spot welder 双点电焊机
- micro spot welder 微型点焊机
- fixed spot welder 固定式点焊机...
- pedestal spot welder 台座式点焊机...
- multiple spot welder 多点点焊机,多点焊接...
- spot welder 点焊机
- condenser type spot welder 电容储能点焊机...
- portable spot welder 移动式点焊机,轻便点...
