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

• Abstract: A water dispersed SBS grafted polymer was synthesized by free radical polymerization.
  文摘：采用自由基接枝共聚的方法合成了亲水性SBS接枝丙烯酸共聚物，同时进行了结构表征。
• Protein helps repair cells that have suffered free radical damage.
  蛋白质帮助修复被自由基破坏的受损细胞。
• We studied the effect of scavenging hydroxyl free radical by Se-polysaccharide and Se-protein under the best condition of Fenton system.
  结果表明：硒多糖和硒蛋白清除羟自由基的效果比与之相同浓度的无机硒和相同浓度的多糖及蛋白都要明显；
• 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。
• 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。
• 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。
• OBJECTIVE: To study the effects of anaerobic interval training on free radical metabolism in rats.
  目的：观察无氧间歇训练对大鼠体内自由基代谢的影响。
• Objective To investigate the mechanisms of nonenzymatic glycosylation inducing myocardial aging and free radical theory.
  目的以非酶糖基化和自由基学说探讨心肌老化的发生机制。
• The anti-oxidizing function can prevent the aging of skin caused by free radical.
  具有抗氧化功能，可抵御自由基所造成的肌肤老化。
• Antioxidants are also called free radical scavengers.
  抗氧化剂也被称为自由基的清道夫。