英 [ˌfriː ˈrædɪk(ə)l] 美 [ˌfriː ˈrædɪkl]
自由基：一种特别活跃的原子或原子团，其具有一个或多个未成对的电子，尤其是指在自然生物过程中由身体产生或从外部来源引入的原子或原子团，它们可以通过改变细胞、蛋白质和DNA的化学结构来损害它们。
free radical //
可数名词 Free radicals are atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause of aging, heart disease, and some cancers. 自由基
an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule than has lost an electron and will stabilize itself by stealing an electron from a nearby molecule
同义词： radical
自 由基-引用次数：2
自由基-引用次数：372
Miniature free radical polymerization is an experiment of low cost and easy to be applied into polymer teaching experiments.
采用微型实验进行自由基聚合是一种低成本、绿色实验,适用于教学实验,并有利于发展成设计型和综合型实验。
参考来源自由基聚合的微型实验探索
游离基-引用次数：4
游离基-引用次数：3
参考来源苜蓿皂苷的提取纯化与生物活性评价
自由基
游离基
...力、对骨组织的作用苦荞生物类黄酮可用于治疗骨病和骨质疏松等症，其作用机理在于：其一、清除自由基作用自由基（free radical）是引起癌症；苦荞生物类黄酮的护肝机制最终在于它的抗氧化和抗自由基的作用，衰老，心脑血管退变性疾病的罪恶之源、防癌作用，即...
自由基或游离基(Free Radical)是指单独不成对电子的分子、原子或离子。它极不稳定，需要从其他分子抢夺一个电子来稳定自身结构，所以它会伤害细胞和基因，导致...
自在基（free radical）是惹起癌症，朽迈，心脑血管退变性疾病的罪恶之源。由于苦荞类黄酮精神易氧化，才使其具有肃清才能，它们具有五个羟基，能够充分...
沙苑子对运动训练大鼠肝脏自由基代谢的影响 - 淘金者论文 关键词】 沙苑子；大鼠；肝脏；自由基代谢；运动能力 [gap=1042]KEY WORDS: astragalus complanatus; rat; liver; free radical; exercise performance
The first organic free radical identified was triphenylmethyl radical.
确定的第一个有机自由基是三苯甲基。
It may also reduce free radical damage.
它还能减轻自由基破坏。
The organism tries to counter with free radical production.
肌体通过产生自由基来对抗衰老。
Much of the brain damage suffered during a stroke is caused by the release of so-called "free radical" molecules.
Eliminating free radical production would involve completely redesigning aspects of our metabolism, especially the way we use oxygen to extract energy from food.
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What makes a free radical so reactive, however, is that unlike most molecules it has an odd number of electrons and electrons prefer to arrange themselves in pairs.