neli-arc welding

例句：

1. 1.The neli-arc welding process is used to join metals together.
   中性，可能指某种焊接技术或方法。
2. 2.This type of welding is commonly used in construction projects.
   中性，可能指某种焊接技术或方法。
3. 3. The neli-arc welding machine is essential for the assembly of large machinery.
   中性，可能指某种焊接技术或方法。