This paper deals with the design of gas checking safety system for coal mine, which can be put into use for the purpose of monitoring the component of gas so as to keep the coal mine safe.

针对煤矿开采中存在有易爆炸气体瓦斯的问题，提出并设计安装了矿井瓦斯安全检测系统。

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Imagine buying a car, driving it off the lot and never checking or changing the oil, filling it up with gas, or getting regular tune ups.

想象你买一辆小车，把它开走，可是从不检查油或换油，也不加油，更不进行常规调校。

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So if they chose to ride a bike instead of a car, an automatic transfer of the allotted monthly gas money saved goes from a checking account into a savings account.

这样，如果他们用骑车代替了汽车，每月省下的油钱就会从支票账户转账到一个储蓄账户。

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Health and safety officials have been checking gas appliances inside the flat to trace a leak, and the apartment block has been evacuated while tests continue.

BBC: Neil McFerran (l) and Aaron Davidson (r)

Rauf wrote that from the media accounts, he concluded that in the McDonald's, Hussain was checking to see if the gas had been released or not from his device.

CNN: Documents give new details on al Qaeda's London bombings

Meanwhile Jonny, 35, spent summers working in Cross Timbers' fields, first as a construction worker, known as a roustabout, then as a gager, checking oil levels and reading gas meters.

FORBES: Down and Dirty