Dustov杜斯托夫dustn.灰尘；尘土；粉尘vt.去掉 ... 的灰尘；撒粉末于vi.除尘dust injection除尘灰喷吹dust hardening除尘灰板结Dust free?adj.防尘的dust measuring测尘dust reduction降尘dust laden gas含尘炉气dust exhaustor排尘器dust diffusion粉尘扩散dust sb. offv.打击某人dust borne gas含尘气体