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.讨论了该离子交换法在分离锕 - 镧系元素上应用的可能性.The possibility of its potential application is discussed for separation of a...
At least one estimate puts the total tab at $7 million.至少有一个估价把总数定在了700万美元。This puts them in the ballpark and makes them a major player.这使他们得以参加其中并成为主要竞争者。This decision puts the President in a somewhat tenuous position.这...
给服务员、行李搬运工、导游和司机小费是惯例。It is usual to tip waiters, porters, guides and drivers.这些工作组将按惯例工作。These working parties will be going over well-trodden ground.这条惯例对我们不适用。The convention does not apply to us....
They all babbled simultaneously.他们同时叽里咕噜地说了起来。The two guns fired almost simultaneously.两支枪几乎同时开火。The radar beam can track a number of targets almost simultaneously.雷达波几乎可以同时追着多个目标....