Valve Guide, Valve Seat, Valve Lock, Valve Spring Retainer, Casting Products.
气门导管，气门座圈，气门锁片，气门弹簧座，铸件系列。
In addition, the retainer also ACTS the supplemental function of the radial force when the retainer supports the lock ring spring simultaneously.
另外，保持架在支承紧箍弹簧的同时还起到了径向力的补充作用。
In addition, the retainer also ACTS the supplemental function of the radial force when the retainer supports the lock ring spring simultaneously.
另外，保持架在支承紧箍弹簧的同时还起到了径向力的补充作用。
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