weld-in nozzle

例句：

1. 1.The weld-in nozzleis essential for the proper functioning ofthe welding machine.
   焊接喷嘴对于焊机的正确运作至关重要。
2. 2. The engineercarefully inspected the weld-in nozzlebefore installing it in the machine.
   工程师在安装机器之前仔细检查了焊接喷嘴。
3. 3.The weld-in nozzlewas designed to minimize the risk of contamination during the welding process.
   焊接喷嘴的设计旨在最小化焊接过程中的污染风险。