linking machine needle

例句：

1. 1. The engineer useda connecting machine needle to connect the two pieces of metal together.
   工程师使用连接机针将两块金属连接在一起。
2. 2.The technician adjusted the linkage machine needle to ensure proper alignment.
   技术员调整了连接机针，以确保正确对齐。
3. 3. The machine's needle was designed to precisely align the threads for a seamless finish.
   机器的针被设计成能精确对齐线头，以获得无缝的外观。