the many isotopes of carbon碳的诸多同位素Tritium is one of the mildest radioactive isotopes.氚是最和缓的放射性同位素之一.The inferno spewed a deadly plume of radioactive isotopes into the atmosphere.这个象炼狱般的地方将一缕致死的放射性同位素喷入大气层....
There are two main types of uses of radioactive isotopes in biochemistry.在生物化学中,放射性同位素主要有两方面的应用.Nucleon and use of radioactive isotopes to launch particle ionizing air molecules.核子中和利用放射性同位素发射粒子,使空气分子电离.More reactive are...
They talked modestly of their valiant efforts to keep the tanker afloat.他们说起自己设法使油轮漂浮的英勇之举时非常谦虚。tanker aft油槽船尾部An oil tanker spewed its cargo into the sea.一艘油轮将装载的油全都泄入了大海。Last night a cargo ship collided with a tanker c...