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  • “flapper”簡單造句,flapper造句子
    發表於:2018-08-07
    Accordingtostructuralcharacteristicsofaflappervalve,flappervalves,butterflyvalves,ballvalves,diaphragmvalves,Anglevalves,throughthevalve,three-wayvalve.Thesimpleprintdres...
  • “flapper valve”簡單造句,flapper valve造句子
    發表於:2023-12-31
    1、bulkheadflappervalve2、single-jetflappervalve3、Accordingtostructuralcharacteristicsofaflappervalve,flappervalves,butterflyvalves,ballvalves,diaphragmvalves,Anglevalve...