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....
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....