... stuffing box bulkhead 尾轴孔舱壁 stuffing box casing 填料函外壳 stuffing box complement for piston rod 活塞杆填料函总成 ...
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... 活塞杆填料箱 gland box for pisti 填料函壳体 stuffing box casing 填料函张力弹簧 tension spring for stuffing box ...
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