rotating seal ring ; seal head
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其实动环密封圈过紧有害无益。
In fact, actin ring seals tight unhelpful.
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用以保持止动环的槽。
Snap ring used to maintain the groove.
硬面环和座环的强度校核和配合长度的确定也是镶嵌式动环设计的要点。
The intensity and matched length of hard ring and husk ring is also a designed key of mounted moving ring.
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