短語(yǔ)詞組短語(yǔ)positive proof proof positive 確証proof positive 鉄証;鉄証如山;有利証據(jù);確鑿的証據(jù)positive pressure explosion -proof 正壓防爆Positive pressure explosion -proof house 發(fā)明名稱proof -positive 確鑿的証據(jù)Positive -pressure explosion-proof house 發(fā)明名稱 返回 positive proof