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

• 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。
• Iron and copper increase oxidative stress ( free radical damage), which is a major problem in CFIDS.
  增加铁和铜的氧化应激（自由基损伤），这是一个重大问题在CFIDS。
• Antioxidants are also called free radical scavengers.
  抗氧化剂也被称为自由基的清道夫。
• 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。
• 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。
• 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。
• The Effect of Dioxin on Expressions of AhR Genes and the Free Radical
  二恶英中毒对AhR基因表达和自由基水平的影响
• This reaction has been classified as a free radical chain process.
  这种反应是按自由基连锁反应的历程进行分类的。
• 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。
• 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