核性的英文：
nuclearity

One cause may be an Rh incompatibility causing kernicterus in the newborn
一个原因可能是Rh因子不相配引起新生儿的脑核性黄疸。

nuclear ensemble
原子核系综

Is there a credible alternative to the nuclear deterrent?
是否有可以取代核威慑力量的可靠办法？

Government ceases nuclear testing.
政府停止了核试验。

The ship is propelled by nuclear power.
这艘船是以核子动力来推动的。

There is a large body of support for nuclear disarmament.
拥护裁减核军备的人很多.