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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

        • 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 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。
        • The majority of vinyl monomers can be used for free radical polymerization catalyst.
          乙烯基类单体大多数可以采用游离基型催化剂进行聚合。
        • 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。
        • Furthermore, the mechanism of free radical scavenging reactions of Magnolol and Honokiol were proposed.
          此外,初步探讨了其自由基清除活性反应机理。
        • 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。
        • Fluorine-containing polymer-base fatliquoring agent was prepared through free radical copolymerization with maleic anhydride and natural oil.
          通过动、植物油与马来酸酐共聚,然后用十二氟庚醇和高级脂肪醇酯化,合成了含氟聚合物加脂剂。
        • 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。