... screw-conveyor feeder 螺旋运送加料器 screw-down stop valve 螺杆向下止动阀 screw-feed diamond drill 螺旋给料式金刚石钻机 ...
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... Screw-die螺丝模 Screw-down stop valve螺旋阀 Screw-thread螺丝 ...
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screw-down stop check valve 截止止回阀
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