The free neutrons can bombard other nuclei, leading to a series of fissions called a chain reaction.
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。
Gunderson's team examined individual cells in the wasting muscles and found that there is apoptosis going on, but that other cells are dying, not the muscle fibers or their extra nuclei.
甘德森的小组检查了老化肌肉中的细胞个体，发现虽然的确有一些细胞死亡，但另一些细胞却没有完全死去，肌肉纤维或增加的细胞核也没有消失。
Fusing heavy hydrogen isotopes requires lots of energy, partly because the nuclei are positively charged and repel each other.
融合重氢同位素需要大量能量，部分原因是因为原子核带正电并相互排斥。
The four new elements, all of which are synthetic, were discovered by slamming lighter -nuclei into each other and tracking the following decay of the radioactive superheavy elements.
这四种新元素都是人造的，是由火花与原子核相互撞击并且循着放射性超重元素衰变的轨迹而发现的。
Other vertebrates such as fish, reptiles and birds have red cells that contain nuclei that are inactive.
其他的脊椎动物，比如说鱼类，爬行动物和鸟类等红细胞有核的动物的红细胞却没有进化成无核的红细胞。
Unlike most other elements lighter than iron, the light nuclei of lithium, beryllium and boron are not produced in significant amounts in stars.
不同于大多数比铁轻的元素，Li、Be、B等轻元素大部分不是在恒星内制造的。
Unlike most other elements lighter than iron, the light nuclei of lithium, beryllium and boron are not produced in significant amounts in stars.
不同于大多数比铁轻的元素，Li、Be、B等轻元素大部分不是在恒星内制造的。
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