短語詞組短語positive proof proof positive 確證proof positive 鐵證;鐵證如山;有利證據;確鑿的證據positive pressure explosion -proof 正壓防爆Positive pressure explosion -proof house 發(fā)明名稱proof -positive 確鑿的證據Positive -pressure explosion-proof house 發(fā)明名稱 返回 positive proof