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为了克服活塞式压力计由于受外力驱动活塞旋转时,破坏润滑薄膜,而损伤滑动表面的缺陷,日本公开专利公报昭53—120578与昭53—120579介绍了两种新结构的压力
In order to overcome the drawbacks of the piston type pressure gauge due to damage to the sliding surface caused by the rotation of a piston driven by an external force, Japanese Laid-Open Patent Publication Nos. Sho 53-120578 and Sho 53-120579 describe the pressure of two new structures