当皮肤暴露在阳光下，紫外线辐射会引发游离原子团的形成，转而破坏皮肤细胞中的DNA， 引起肿瘤的生长。
When the skin is exposed to sunlight, the radiation triggers the formation of free radicals which, in turn, damages the DNA in skin cells, causing tumours to grow.
这种反应，需要催化剂，将甲醇和水变成质子和电子（换句话说，就是游离的氢原子）以及二氧化碳。
The reaction, which requires a catalyst, turns the methanol and water into protons and electrons (in other words, dissociated hydrogen atoms) and carbon dioxide.
这些游离的氧原子能维持它们自己的形式或者和氢原子联合成活性氧(ROS)，ROS能被酶和蛋白分解可逆性影响细胞功能。
These rogue oxygen atoms can remain on their own or combine with hydrogen atoms to form reactive oxygen species (ROS), which wreak havoc with enzymes and proteins and adversely affect cell function.
科学家们知道：只有在中子撞击原子的原子核时，中子才可能处于游离状态。这种碰撞会改变原子核的运动轨迹。
Scientists know that a neutron is loose only when the neutron hits the nucleus of an atom. The collision changes the path of the nucleus.
本文研究游离胆汁酸及其丁二酸衍生物的快速原子轰击（FAB）质谱。
The fast atom bombardment (FAB) mass spectra of free bile acids and their succinyl derivatives are described.
原子因，基团，至少有一个游离电子的原子或一组原子。
An atom or a group of atoms with at least one unpaired electron.
结果表明，苯环与铂原子之间有很强的成键作用，并随着游离氢原子和水分子的参与，作用强度有很大变化。
It was found that there existed a strong bonding interaction between Pt and benzene, and the bonding strength changed with the participation of hydrogen and water.
例如，背景粒子和一个与中性伴子碰撞而反冲的原子核相比，前者将造成更多的游离。
For example, background particles tend to produce more ionization than a nucleus recoiling from a neutralino collision.
探测器使用的第二种方法，是观察反冲原子核的另一种效应：游离。
The probability of obtaining a lattice atom displacement via the phonon kick process is evidently small.
对微弱的电场而言，空气是优良的绝缘体(电子附著到氧原子上的速度，大于受冲撞而游离的速度)，并不会有可观的电流流通。
For small fields, air is a good insulator-electrons attach to oxygen atoms faster than they are knocked loose by collisions-and electric current cannot flow in any appreciable amount.
对微弱的电场而言，空气是优良的绝缘体(电子附著到氧原子上的速度，大于受冲撞而游离的速度)，并不会有可观的电流流通。
For small fields, air is a good insulator-electrons attach to oxygen atoms faster than they are knocked loose by collisions-and electric current cannot flow in any appreciable amount.
应用推荐