主要应用：用于输送焊接或切割用的氧气和乙炔。

Application: Mainly used for conveying of oxygen and acetylene gases for welding and cutting equipment.

youdao

主要应用：用于输送焊接或切割用的氧气和乙炔。

Application: Mainly used for conveying of oxygen and acetylene gases for welding and cutting equipment.

youdao