But the wall isn't impenetrable. It's riddled with "interstellar tunnels" that lead from one pocketof less dense gas to another.
但是这层气体并不是密不透风,它里面有很多星际“隧道”,把一个个局部空洞区域连起来。
2
Pocketgas contains real time graphing of gases so trends in gas data can be easily seen.
袖珍气体包含实时图形的气体,使趋势在气体数据可以很容易地看到。
3
Tank and cover shall be shaped so as to prevent stagnation of water externally, and gaspocket internally which could trap escaping gas and thereby impede operation of the gas detector relay.