manual electro-slag welding

例句：

1. 1. Manual electro-slag welding is a technique used to join metal parts together without the useof power tools.
   手工电弧焊是一种不使用电力工具连接金属部件的技术。
2. 2.In this process, a wire is manually inserted into the molten metal and pulled out quickly to create an electric arc.
   在这个过程中，一根线被手动插入熔融的金属中，然后迅速拉出以产生电弧。
3. 3. The manual electro-slag welding process requires skilled operators who can control the welding parameters accurately.
   手工电弧焊过程需要熟练的操作员，他们能够准确地控制焊接参数。