If you smell gas or see a broken line, shut off the main valve from the outside.
如果闻到煤气味儿，或看到管道破裂，要关掉从外面进屋煤气管道的主阀门。
Compared with traditional off-line and other on-line detection technologies, optical imaging technology is a great breakthrough in the SF6 gas leakage detection.
相对于传统的非在线检测和其它在线检测技术来说，光学成像技术在SF 6气体泄漏检测方面，是一个比较大的突破。
When a natural gas network is done off-line numerical simulation, every pipeline needs be distributed initiatory flow as the initiatory value of iterative computation.
在对天然气管网进行离线数值模拟计算时，需要给各管段分配初始流量，并作为迭代计算的初始值。
Delivery stations and Gas Off-Take stations may continue to draw from the line pack.
出口站和排气站应可以继续从输送管抽液。
Delivery stations and Gas Off-Take stations may continue to draw from the line pack.
出口站和排气站应可以继续从输送管抽液。
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