With these excellent properties the unidirectional pressure blockage agent plugs the fractures in permeable reservior and protects the oil and g...

证实了单向压力封闭剂具有封闭渗透性岩层裂缝和保护油气层的优良性能。

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Adopting a low-power strategy by introducing double radial operating airgaps and reducing axial non-operating airgaps, a low-power unidirectional proportional solenoid for high pressure is presented.

采用减小轴向非工作气隙和引入双径向工作气隙的低功耗策略，提出了低功耗耐高压单向比例电磁铁的新结构；

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