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...
卢就各种芝麻小事唠叨个没完，后来我烦得都想尖叫了。Lou prattled on about various trivialities till I wanted to scream.相信我，这是我最起码能做的了，只是小事一桩。Believe me, it's the least I can do, a mere trifle.他为一点小事就大发脾气。He flew off the handle at the slightes...