Lasers promise to change this by making isotope separation easier, and cheaper.激光可以改变这种局面,从而使同位素分离变得比较容易 、 比较廉价一些.This indium isotope was created at the same time as the earth.这种铟同位素与地球产生在同一时代.The isotope ratio is direct...
The Minnesota work on kaersutite also showed the presence of the isotope neon - 21.明尼苏达大学关于钛角闪石的研究表明,其中也存在同位素氖 - 21.Today, most cyclotrons are used either for instructional purpose or for isotope production.今天大多数回旋加速器是用在...
Rock'n'roll has become so commercialised and safe since punk.摇滚乐自从朋克乐以后就已经过于商业化而缺乏新意了。"They play classic rock'n"roll,' states her boyfriend, "My dad digs them too."“他们演奏经典摇滚乐，”她的男朋友说道，“我爸爸也喜欢他们。”Rock&...