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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

        • The role of oxygen free radical in experimental keratitis a minute hairlike projection on mucous membrane.
          氧自由基在实验性角膜炎中的作用黏膜上起保护作用的细小的毛。
        • 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。
        • Mitochondria play an important role in energy metabolism, free radical production, aging and cell apoptosis.
          线粒体在能量代谢、自由基产生、衰老、细胞凋亡中起重要作用。
        • 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。
        • 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。
        • 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。
        • 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。
        • They also dramatically increase free radical generation in the brain.
          他们还大幅增加自由基的生成在大脑中。
        • 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。
        • 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。