Shenyang Second Valve Factory 沈阳第二阀门厂
second aortic valve area 主动脉瓣第二听诊区
second speed solenoid valve 第二速电磁阀
second type compensating valve group 第二型补偿阀组件
second stage discharge valve 第二级排气阀
the second aortic valve area 第二听诊区
second stage suction valve 第二级吸入阀
To test for tightness of second check Valve.
检测第二止回阀的密封性。
Second check must be drip tight when pressure is applied to downstream side of valve.
当阀门下游一侧出现压力时,第二止回阀必须是无滴漏。
These valves are referred to as second generation diaphragm valves because basic changes in the valve design have been incorporated to resolve the deficiencies of the earlier diaphragm valves.
因为阀门设计产生了基本的变化,以克服较早的隔膜阀的缺点,这些阀门被称为第二代隔膜阀。
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