短語詞組短語heavy oil -water two-phase flow 稠油heavy -water pressure-tube reactor 重水壓力琯式堆Heavy -water deposit 大水鑛牀mining of heavy -water deposit 大水鑛牀開採ium -and-heavy-water reactor 鈾重水反應堆heavy water -tight door 重型水密門 返回 heavy water