... 截止止回阀 stop check valve 截锥螺旋弹簧 conical spring 截锥涡卷弹簧 valute spring ...
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不等节距圆柱螺旋弹簧Variable pitch cylindrically helical spring 截锥螺旋弹簧 Conical helical spring 中凸形螺旋弹簧 Barrel shaped helical spring ..
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短语
截锥螺旋压缩弹簧
truncated conical spiral compression spring
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conical helical spring
conical spring
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