caesium是什么意思

短语搭配

(1)caesium clock铯钟

双语例句

(1)What about caesium-137?

那铯- 137呢？

(2)Radioactive caesium has also been detected.

还发现了放射性铯。

(3)It is cool and filter the precipitated caesium dichloroiodide .

这是冷却，滤出沉淀的二氯碘化铯。

(4)Caesium reduces the size of your picture up to 90%, preserving the original quality.

铯使你的图片大小高达90%，保留原有的品质。

(5)The main radionuclides representing health risk are radioactive caesium and radioactive iodine.

意味着健康威胁的主要的放射性核素包括放射性铯和放射性碘。

同义词

n. 铯

释义

n.

the chemical element of atomic number 55, a soft, silvery, extremely reactive metal. It belongs to the alkali metal group and occurs as a trace element in some rocks and minerals. (Symbol: Cs).

（化学元素）铯（符号:Cs）。

词源

"mid 19th cent.: from Latin caesius ‘greyish-blue' （because it has characteristic lines in the blue part of the spectrum）．"