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
- 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。 - 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。 - The high quality high-solids hydroxyl acrylic resins with low viscosity were prepared by free radical polymerization.
合成的改性物对羟基树脂有极好的相容性，可以与羟基丙烯酸树脂配成涂料。 - 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。 - 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。 - Antioxidants are also called free radical scavengers.
抗氧化剂也被称为自由基的清道夫。 - 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。 - 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。 - 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。