On July 6, 1988, as part of routine maintenance, technicians removed and checked safety valves which were essential in preventing dangerous build-up of liquid gas.

在1988年7月6号，作为日常保养的一部分，技术人员检查阀门的安全，这在预防液态气体的危险中尤为重要。

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BP completely shut the valves on the cap late Thursday as part of a 48-hour test to see if the cap can fully contain the oil leaking from the well.

英国石油公司星期四晚间完全关闭了井盖上的阀门，这是检查顶盖是否能够彻底抑制油井漏油的48小时测试的一部分。

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After uncovering of treble part we see valves under laid by felt.

在揭露高音部分以后我们看见毛毡支持的阀门。

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By the time she was 30, Al-Tunisi was modernizing the Abqaiq oil processing plant in part by replacing thousands of manually operated valves with electric ones.

FORBES: Magazine Article

Redux and Pondimin caused damage to heart valves when used with the diet drug phentermine as part of fen-phen.

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Export controls also prompted the European Space Agency to pay to develop a European supplier of solenoid valves, so that European space-propulsion systems do not depend on this American part.

ECONOMIST: Space technology