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。

youdao

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。

youdao

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。

youdao

Extrapolate that problem to the Gulf's 4, 000 rigs (where 60% of oil and 40% of gas production remains off-line) and Katrina's impact will be felt on the American oil patch for many yearsto come.

FORBES: Open the Spigots

Extrapolate that problem to the Gulf's 4, 000 rigs (where 60% of oil and 40% of gas production remains off-line) and Katrina's impact will be felt on the American oil patch for many years to come.

FORBES: Open the Spigots

After tens of billions of euros have been spent on these systems, raising consumer electricity prices in the process, not a single coal or gas-fired power plant has been taken off line.

FORBES: A Top German Environmentalist Cools On Global Warming