中英释义：
双语例句
通过变换阀门开关的顺序,模拟封隔器在井下的工作状态.
The down - hole state of packer was stimulated By changing the order of valve switch.
重点词汇
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阀门
valve; gate; tap; cock; stopcock
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开关
switch; on-off; circuit breaker; power switch; on-off switch; disjunctor; switch on; switch off; turn on; turn off