balanced mechanical seal
... 非平衡式机械密封-unbalanced mechanical seal 平衡式机械密封-balanced mechanical seal 单端面机械密封-single mechanical seal ...
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非平衡式机械密封 [机] unbalanced mechanical seal
平衡式机械密封- balanced mechanical seal
非平衡式机械密封- unbalanced mechanical seal
平衡式双端面机械密封 balanced double mechanical seal
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