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
- 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; - 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。 - 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。 - 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。 - 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 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 - 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。 - 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。 - 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 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。