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。
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。
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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