radioactive emanation 放射性射气...radio-emanation 镭射气...radium emanation 镭射气(即氡)镭射气...emanation n.散发,发出射气放出物,臭气...emanation security 放射保密措施...actinium emanation 锕射气...radon emanation 氡射气...thorium emanation 钍射气...emanation method 射气法...emanation test 氡试验;射气试验...emanation water 射气水...
交流互动
发表言论