vent line

基本解释

Open the valve on the vent line just upstream the trip valve.
打开速闭阀上游放空管线上的阀门。
All relieve& purge valve shall be connected by a vent line leading away from the gas storage area.
所有减压阀都需要连接一条通出气体存藏区的排气管路。
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The hydraulic calculation of vent line is an interesting but difficult problem in natural gas gathering engineering design.
放空管路水力计算是天然气集输工程设计中一个令人极感兴趣、却又常常使人困惑的问题。