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。
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.
这个过程能压缩钚，并与此同时钚也会受到由钋组成的触发器散发出的中子的轰击，这样就引发了第二个阶段。
That compresses the plutonium while it is simultaneously bombarded with neutrons from a trigger made of polonium, and thus begins the second stage.
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。
"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."
利用中子轰击地层，测量由此产生的非弹性和俘获伽马射线谱。
The tool bombards the formations with neutrons and measures both the inelastic and capture gamma ray spectra that results.
自由中子可以轰击其它的核，导致一系列的裂变，称为链锁反应。
The free neutrons can bombard other nuclei, leading to a series of fissions called a chain reaction.
记录元素浓度的测井方法，利用中子轰击原子核，使其激活后释放出伽马射线，根据伽马射线的特征能量级可获得元素浓度。
A log of elemental concentrations derived from the characteristic energy levels of gamma rays emitted by a nucleus that has been activated by neutron bombardment.
当一个中子轰击一个原子核的时候，这个核可能会俘获这个中子，从而变的极不稳定。
When a neutron hits an atomic nucleus, the nucleus can absorb the neutron and become unstable.
当一个中子轰击一个原子核的时候，这个核可能会俘获这个中子，从而变的极不稳定。
When a neutron hits an atomic nucleus, the nucleus can absorb the neutron and become unstable.
应用推荐