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  1. piston ring
  2. packing ring

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dibromopropane, dibromopyrogallolsulfonaphthalene, dibromoquine-4-chlorimide, dibromothymolsulfonaphthalein, dibromothymolsulfonphthalein, dibs, dibucaine, dibudinate, dibuline, dibunate,

相似单词


涨红了脸, 涨价, 涨价幅度, 涨价趋势, 涨落, 涨圈, 涨水, 涨缩, 涨缩盒, 涨缩卷筒,