弘扬国学 · 传承文化

lanthanum

英 ['lænθənəm] 美 ['lænθənəm]

解释

n. [化学] 镧

※ 提供单词"lanthanum"的中文意思、发音示范及音标对照，中英文词源、例句和用法等。

中文词源

lanthanum 镧

来自PIE*ladh,隐藏，词源同latent.因该元素发现之艰难而得名。比较dysprosium.

英文词源

lanthanum (n.): metallic rare earth element, 1841, coined in Modern Latin by Swedish chemist and mineralogist Carl Gustav Mosander (1797-1858), who discovered it in 1839, from Greek lanthanein "to lie hidden, escape notice," from PIE root *ladh- "to be hidden" (see latent). So called because the element was "concealed" in rare minerals.

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例句和用法

1. Lanthanum praseodymium - cerium rare earth ( LPC ) was a patent composition.: 镧镨铈混合稀土 ( LPC ) 是新型专利成分的混合稀土.

2. Among the simplest are the lanthanum compounds of the form La?: 其中最简单的是la? 研问降娘缁0合物.

3. Description: Lanthanum Nitrate is soluble in water and moisture in wet air.: 说明: 硝酸镧溶于水,在潮湿的空气中易潮解.

4. The analysis of tilt boundary observed in lanthanum chromates was made.: 对观察到的铬酸镧倾斜晶界进行了分析.

5. Cerium showed more effective than lanthanum for vanadium tolerance of FCC catalysts.: 氧化铈较氧化镧更容易与钒反应,因而具有更强的抗钒能力.