A set assembly of cylinders, which are fastened together in a frame and interconnected by a manifold, transported and used as a unit.
A set assembly of cylinders, which are fastened together in a frame and interconnected by a manifold, transported and used as a unit.
气瓶上的一套附件，它用一个多头分配器紧密地连接在瓶体上，作为一个整体运输和使用。