dustpann.簸箕dustn.灰尘；尘土；粉尘vt.去掉 ... 的灰尘；撒粉末于vi.除尘dust removal mechanism除尘机理dust collection method除尘方法dust-proof insulator防尘绝缘子Dust removal equipment除尘设备Dust explosion-proof粉尘防爆dust-proof type relay防尘式继电器dust fall of atmosphere大气降尘dust - removal scheme除尘方案dust sedimentation flux尘埃沉降通量dust-collecting plate集尘板