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维基
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阀作用 [fá zuò yòng]
[机] valve action
- 本文从理论上阐述液动力对针阀的作用，并用试验加以验证。
In this paper, the action of the hydrodynamic force to the needle valve of injector is clarified, and checked by experiment. - 由于泵站出站止回阀的作用，长输管道水击过程中会出现同步现象。
Under the effect of check valve, synchronization phenomenon is caused in the process of water hammering in long distance pipelines. - 型管柱中的生产堵塞器具有单流阀作用，可方便进行反循环洗井；
The procreative blanking plug of the "Y type" pipe string has check valve function and it can conveniently for reverse circulation well cleanup.
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