In the core, uranium atoms are bombarded with free neutrons producing immense heat.

在核反应堆芯，自由中子连续撞击轴原子，从而产生大量热量。

youdao

The uranium or plutonium isotopes are referred to as "fissile," which means we can use them to induce fission by bombarding them with free neutrons.

铀或钚的同位素被称为裂变材料，即我们可以利用自由中子去轰击它们来产生裂变反应。

youdao

"The uranium or plutonium isotopes are referred to as" fissile, "which means we can use them to induce fission by bombarding them with free neutrons."

铀或钚的同位素被称为裂变材料，即我们可以利用自由中子去轰击它们来产生裂变反应。

youdao

The change is being caused by the expiration of the HEU-LEU contract, signed in 1993 by Russia and the US. The treaty, which expires in 2013, allowed the duty-free export of Soviet uranium extracted from nuclear warheads.

FORBES: Forget Gold and Oil, Buy Uranium!