astatine
基本解释
- n. [化學] 砹（化學元素At）
英汉例句
- Here is a brief description of astatine.
廻複：砹的顔色是什麽？ - Any of a group of five chemically related nonmetallic elements including fluorine,chlorine,bromine,iodine,and astatine.
鹵素包括氟、氯、溴、磺、砹有化學聯系的五個非金屬元素一族中的任何一個 - Any of a group of five chemically related nonmetallic elements including fluorine, chlorine, bromine, iodine, and astatine.
鹵素包括氟、氯、溴、磺、砹有化學聯系的五個非金屬元素一族中的任何一個 - Any of the five nonmetallic elements with similar chemical properties: fluorine, chlorine, bromine, iodine (I), and astatine (At).
周期表VIIa族元素，包括五種化學性質類似的非金屬元素:氟（F）、氯（Cl）、溴（Br）、碘（I）和（At）。 - astatine should have the greatest tendency to form ??ations
砹應該具有形成陽離子?鬃佘蟮那閬頡?/UK>
词组短语
- astatine - ionic 離子型
- at -astine labelled protein 標記蛋白質
- 211 at -astatine labelled protein at標記蛋白質
短語
英英字典
- a chemical element that is radioactive and is the rarest natural element on the Earth's surface
- a radioactive element of the halogen series: a decay product of uranium and thorium that occurs naturally in minute amounts and is artificially produced by bombarding bismuth with alpha particles. Symbol: At atomic no: 85 half-life of most stable isotope, 210At: 8.1 hours probable valency: 1,3,5, or 7 melting pt: 302C boiling pt: 337C (est)
劍橋英英字典
柯林斯英英字典
专业释义
- 砹
- 砹
- 砹