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

• Status of free radical and water in ultradried seeds with distinct moisture content were investigated in safflower seed.
  研究了不同超干度的红花种子自由基和水分状态。
• The high quality high-solids hydroxyl acrylic resins with low viscosity were prepared by free radical polymerization.
  合成的改性物对羟基树脂有极好的相容性，可以与羟基丙烯酸树脂配成涂料。
• 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
• Vitamin E is the main body of biological free radical scavenger and antioxidant one.
  维生素E是体内最主要的生物自由基清除剂和抗氧化剂之一。
• Objective to study the scavenging effect of Cheqiancao on oxygen free radical.
  目的研究车前草对氧自由基的清除作用。
• 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。
• The oxygen free radical scavenging activities and anti-lipoprotein oxidative effects of green tea polysaccharides were studied.
  研究绿茶多糖体外清除氧自由基与抗脂蛋白氧化作用。
• 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
• 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。