free radical
英 [ˌfriː ˈrædɪkl]
美 [ˌfriː ˈrædɪkl]
n. 自由基; 游离基
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
- in the body free radicals are high-energy particles that ricochet wildly and damage cells
双语例句
- 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 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。 - 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。 - 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 - 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； - 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。 - 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。 - 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 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。