free radical

英 [ˌfriː ˈrædɪkl]

美 [ˌfriː ˈrædɪkl]

n.  自由基; 游离基

医学化学

牛津词典

noun

• 自由基；游离基
  an atom or group of atoms that has an electron that is not part of a pair, causing it to take part easily in chemical reactions. Free radicals in the body are thought to be one of the causes of diseases such as cancer.

柯林斯词典

• 自由基;游离基
  Free radicalsare atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause of ageing, heart disease, and some cancers.

英英释义

noun

• an atom or group of atoms with at least one unpaired electron
  1. in the body free radicals are high-energy particles that ricochet wildly and damage cells
  Synonym:radical

双语例句

• Copper-containing enzymes play important roles in iron and catecholamine metabolism, free radical scavenging, and in the synthesis of hemoglobin, elastin and collagen.
  含铜的酶在铁和儿茶酚胺的代谢、自由基清除、合成血红蛋白、弹性蛋白和胶原蛋白中发挥重要作用。
• Study on the ability of scavenging free radical of the different extracts from leaves of Eucalyptus
  桉树叶不同提取物对自由基的清除能力研究
• Free Radical Scavenging Effects of Extracts from Various Parts of Citrus
  柑橘不同部位提取物对羟自由基的清除作用研究
• Secondary inflammatory reaction and free radical damage existed in the tissue around intracerebral hemorrhage.
  脑出血后血肿周围存在继发炎性反应与自由基损伤。
• Antioxidants are also called free radical scavengers.
  抗氧化剂也被称为自由基的清道夫。
• This investigation reveals that carminic acid has certain free radical scavenging activity, thereby providing a food additive.
  结果表明胭脂红酸是一种对自由基具有一定清除活性的食品添加剂。
• They are large molecules that are able to maintain stability even if they are in a free radical form.
  抗氧化剂是很大的分子团，即使是在自由基的状态下它们仍能保持稳定。
• The paper reviewed the modification of chitosan by free radical polymerization and atom transfer radical polymerization ( ATRP), emphasized the application of ATRP on graft copolymerization of chitosan.
  综述了普通自由基聚合和原子转移自由基聚合（ATRP）反应对壳聚糖及其衍生物进行修饰改性的研究现状。着重介绍了ATRP技术在壳聚糖接枝改性方面的应用。
• Conclusion Formaldehyde can injury free radical eliminated system to cause lung injury.
  结论：甲醛可损伤小鼠自由基清除系统。
• Study on synthesis and scavenging capacity of free radical of hesperidin-zinc complex
  橙皮苷锌配合物合成及清除自由基能力的研究