astatine
基本解釋
- n. [化學(xué)] 砹（化學(xué)元素At）
英漢例句
- Here is a brief description of astatine.
廻複：砹的顔色是什麼？ - 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(xué)聯(lián)系的五個(gè)非金屬元素一族中的任何一個(gè) - 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(xué)聯(lián)系的五個(gè)非金屬元素一族中的任何一個(gè) - 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(xué)性質(zhì)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(yīng)該具有形成陽離子?鬃佘蟮那閬頡?/UK>
詞組短語
- astatine - ionic 離子型
- at -astine labelled protein 標(biāo)記蛋白質(zhì)
- 211 at -astatine labelled protein at標(biāo)記蛋白質(zhì)
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)
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專業(yè)釋義
- 砹
- 砹
- 砹