drossn.浮渣；糟粕；无价值之物Drossinis德罗西尼dross box浮渣箱dross band锡渣带dross hole出渣口dross spot锡渣,杂质集中处dross coal渣煤dross drop撇渣dross trap集浮渣器,扒渣,撇渣,浮渣捕集器drossinessn.不纯粹(无价值)Drossopoulo德罗索普格