Any leak or failure results in loss of control line pressure, acting to close the safety valve and render the well safe.

任何的渗漏或损坏都将造成控制管线压力的损失，这时关闭安全阀并确保井的安全。

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Disadvantages of sublevel caving without sill pillar lie in high ore loss and dilution as well as difficult control of ore loss and dilution.

无底柱分段崩落采矿法存在损失贫化大和损失贫化难以控制的缺点。

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In well-irrigated areas in China, water disputes are often caused by incorrect water measurement or loss of control measures.

在我国农村井灌区内，由于计量不准及无制约措施，容易引发一些水事纠纷，造成水费计收困难、水资源浪费。

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Pc James Duncan told the second day of the trial at the High Court in Aberdeen a loss of control would have well in excess of 70mph.

BBC: Fatal car hit wall 'like a bomb' in Aberdeenshire