astatine

英式音标：[ˈæstəti:n]

美式音标：[ˈæstəˌtin, -tɪn]

概况：

n. [化学] 砹（化学元素At）

词义：

n.

砹（元素符号At）；

英英释义

astatine[ 'æstəti:n ]

n.a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium

同义词：Atatomic number 85

用法：

权威例句

Astatine

Astatine

Measuring astatine-211 distributions with SPECT

Astatine-211-labeled radiotherapeutics: an emerging approach to targeted alpha-particle radiotherapy.

A microdosimetric model of astatine-211 labeled antibodies for radioimmunotherapy.

Astatine-211 labeling of internalizing anti-EGFRvIII monoclonal antibody using N-succinimidyl 5-[211At]astato-3-pyridinecarboxylate.

Dry-distillation of astatine-211 from irradiated bismuth targets: a time-saving procedure with high recovery yields.

Establishment of radioactive astatine and iodine uptake in cancer cell lines expressing the human sodium/iodide symporter

Astatine-211 labeling of an antimelanoma antibody and its Fab fragment using N-succinimidyl p-[211At]astatobenzoate: comparisons in ...

Labeling Monoclonal Antibodies and F(ab′)2 Fragments with the α -Particle-Emitting Nuclide Astatine-211: Preservation of Immunorea...

英语词源：

astatine (n.)

radioactive element, named 1947, from Greek astatos "unstable" (see astatic) + chemical suffix -ine (2). So called for its short half-life and lack of stable isotopes. "The element appears not to have a stable form and probably does not exist in nature" [Flood, "Origin of Chemical Names"].

造句：

1. On Earth rarest element astatine .

地球上最稀有的元素砹。

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2. Halogen: Any of five nonmetallic elements-fluorine, chlorine, bromine, iodine, and astatine-with similar chemical properties.

卤素：周期表VIIa族元素，包括五种化学性质类似的非金属元素︰氟（F）、氯（Cl）、溴（Br）、碘（I）和（At）。

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3. Halogen: Any of five nonmetallic elements-fluorine, chlorine, bromine, iodine, and astatine-with similar chemical properties.

卤素：周期表VIIa族元素，包括五种化学性质类似的非金属元素︰氟（F）、氯（Cl）、溴（Br）、碘（I）和（At）。

www.tdict.com

4. astatine compound

砹化合物

-- 来源 -- 英汉 - 翻译参考[网络]

5. Any of a group of five chemically related nonmetallic elements including fluorine, chlorine, bromine, iodine, and astatine.

卤素包括氟、氯、溴、磺、砹有化学联系的五个非金属元素一族中的任何一个

-- 来源 -- 英汉 - 短句参考

6. any of the chemical elements fluorine or chlorine or bromine or iodine or astatine.

氟、氯、溴、碘、砹中任意一种化学元素。

-- 来源 -- 汉英 - 翻译参考

7. astatine analyzer

砹含量分析仪

-- 来源 -- 英汉 - 翻译参考[网络]

8. astatine isotope

砹同位素

-- 来源 -- 英汉 - 翻译参考[网络]