花铁筛打麦机

perforated plate

perforated ( eardrum )

perforated hardboard【木】

perforated block (cored block, hole block)

Duodenorrhpahy, suture of perforated ulcer

PPU(Perforated petic ulcer)

posterior perforated substance,

multiorifice plate【化工】;perforated plate【化工】