On a slow accumulation of gas, due perhaps to slight overload, gas produced by decomposition of insulating oil accumulates in the top of the relay and forces the oil level down.

在气体慢积累模式中，可能由于轻微过在，绝缘油分解产生的气体在继电器的顶部聚集，迫使油位下降。

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Flammable gas found in the relay indicates some internal fault such as overheating or arcing, whereas air found in the relay may only indicate low oil level or a leak.

如果在继电器中发现可燃气体，这说明有内部故障，比如过热或者电弧作用；而继电器内的空气只说明油位低或者有漏油。

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There has been substantial deregulation at the federal level of airlines, trucking, railroads, oil, and natural gas, to name five large sectors.

航空业、运输业、铁路、石油和天然气这五个大部门的监管已经放宽到联邦水平以下了。

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If we assume natural gas prices track oil's, gas will double from today's already high level.

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First-quarter production for oil and natural gas was at a record level, up 13% from a year ago.

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In 2011, American oil production reached the highest level in nearly a decade and natural gas production reached an all-time high.

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