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机械密封
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mechanical seal
机械密封
依靠弹性元件对静、动环端面摩擦副的预紧和介质压力与弹性元件压力的压紧来达到密封的轴向旋转密封装置。又称端面密封。在旋转密封中应用最广。
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WGS-84 ellipsoid
WGS84椭球
WGU
whale
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Whale Galaxy
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whaler
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What a Mess in the Capital
What Confucius Did Not Talk
whatever is reasonable is true, and whatever is true is reasonable.
what...if analysis
What is a Disaster?
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