氡和钍射气的子体易被气溶胶吸附.The daughter nuclides of radon and thoron tend to become attached.锕射气氡的一种放射性的, 惰性的和气态的同位素, 其半衰期为3.A radioactive, inert, gaseous isotope of radon, with a half - life of 3.92 seconds....
I imagined the eyes of the others in the room upon me.我觉得屋里其他人似乎都在盯着我。Married life was not as idyllic as he had imagined.婚姻生活并不像他想象的那么浪漫美好。I realised that I must have imagined the whole thing.我意识到大概整件事都是我臆想出来的。...
今年他的股票红利增加了.The yields on his shares have increased in this year.你得到多少红利?What dividend did you receive?这些收益不够支付投保人每年分得的红利。These returns will not be enough to meet the payment of annual bonuses to policyholders....