The basic structure and the seal principles of the hard packing were presented, and the formula of specific pressure was given.
介绍了硬填料密封的基本结构及密封原理，给出了比压计算式。
The basic structure and the seal principles of the hard packing were presented, and the formula of specific pressure was given.
介绍了硬填料密封的基本结构及密封原理，给出了比压计算式。
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