astatine

单词astatine

基本解释

n.: 砹（放射性化学元素）
网络: 石厄；石艾

权威解释

• 砹（放射性化学元素）:

  a chemical element. Astatine is a radioactive element which is found in small amounts in nature, and is produced artificially for use in medicine.

英汉解释

• 【化学】砹

例句

• A halogen is defined as an element in group VII of periodic table, including Fluorine, Chlorine, Bromine, Iodine, Astatine.

  卤素是化学元素周期表中第七族的元素，包括了氟、氯、溴、碘、砹。

• Astatine is a radioelement, so in general, halogen is defined as Fluorine, Chlorine, Bromine, Iodine.

  砹是放射性元素，所以一般卤素质的只是氟、氯、溴、碘。

• On Earth rarest element astatine. Had discovered the naturalastatine element only has about 25 grams.

  地球上最稀有的元素砹。已发现的天然砹元素只有25克左右。