acetylene gas cylinder

例句：

1. 1. Thisacetylene gas cylinder isused for cutting metal.
   这个乙炔气瓶用于切割金属。
2. 2. Theengineer carefully checked theacetylene gas cylinder before startingthe work.
   工程师在开始工作前仔细检查了乙炔气瓶。
3. 3. Theacetylene gas cylinder was filled witha mixture of gases.
   乙炔气瓶被填充了一种气体混合物。