“氦核”造句

α粒子是从天然放射性蜕变得到的带正电的氦核.
Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.

粒子 —— 氦核 —— 正通过试管被抛出, 从而在试管中形成人造迷雾.
Alpha particles -- helium nuclei -- were being hurled through the tube, in which an artificial mist had been created.

粒子是从天然放射性蜕变得到的带正电的氦核.
Alpha particles positively charged helium nuclei obtained from natural radioactive decay.

• #氦核