solid welding wire

例句：

1. 1.The welding wire is the key to a successful welding job.
   焊接线是成功焊接工作的关键。
2. 2. The solid welding wire is used for joining metal parts together.
   实心焊接线用于将金属部件连接在一起。
3. 3. The welding wire was too thin, which made the welding process difficult.
   焊接线太薄，使得焊接过程变得困难。