词语释义

英 ['lænθənəm] 美 ['lænθənəm]

n. [化学] 镧

单词分析：

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英英释义

Noun:

a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth

单词网DancI.583316.coM

单词词源

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.

英语词源

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.

词态变化

权威造句

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.

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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.

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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.

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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.

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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.

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近反义词

lanthanum iodate 碘酸镧

lanthanum bromide 溴化镧

lanthanum orthophosphate 正磷酸镧

lanthanum sulfide 硫化镧

lanthanum sulfate 硫酸镧

lanthanum acetate 乙酸镧

lanthanum metaphosphate 偏磷酸镧

lanthanum carbide 碳化镧

potassium lanthanum orthophosphate 磷酸镧钾

lanthanum hydropyrophosphate 焦磷酸氢钐

lanthanum disulfide [化] 二硫化镧...

相似短语

lanthanum hydroxide 氢氧化镧

lanthanum metaphosphate 偏磷酸镧

lanthanum titanates 钛酸镧

lanthanum bromate 【化】 溴酸镧

lanthanum dioxysulfate 【化】 硫酸二氧二镧

lanthanum carbonate 碳酸镧

lanthanum nitrate 硝酸镧

lanthanum silicate 硅酸镧

lanthanum hydrosulfate 硫酸氢镧

lanthanum disulfide 【化】 二硫化镧