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lanthanides

/ˈlænθənaɪdz/

Meanings
noun

镧系元素

Any of the 14 rare earth elements from cerium (or from lanthanum) to lutetium in the periodic table; because their outermost orbitals are empty, they have very similar chemistry; below them are the actinides.

Examples :

"Chemists studying the properties of the lanthanides group them together because these elements behave similarly in chemical reactions. "
化学家在研究镧系元素的性质时，通常将它们归为一组，因为这些元素在化学反应中的表现非常相似。
element chemistry science

Related Words

Illustration properties

properties noun

/ˈpɹɒpətiz/ /ˈpɹɑpɚtiz/

财产，资产。

"Important types of property include real property (land), personal property (other physical possessions), and intellectual property (rights over artistic creations, inventions, etc.)."

重要的财产类型包括不动产（土地），个人财产（其他实体物品）和知识产权（对艺术创作、发明等的权利）。

Illustration lutetium

lutetium noun

/ljuːˈtiːʃiəm/

镥

"The scientist analyzed the sample to determine if it contained lutetium, a metal known for its resistance to corrosion. "

这位科学家分析了样品，以确定它是否含有镥（Lu），一种以耐腐蚀性著称的金属。

Illustration similarly

similarly adverb

/ˈsɪmələli/ /ˈsɪməlɚli/

类似地，相似地

"The sisters dressed similarly."

姐妹俩的穿着很相似。

Illustration actinides

actinides noun

/ˈæktɪnaɪdz/

锕系元素

"My chemistry textbook explains that the actinides are a series of radioactive elements, including uranium and plutonium, located below the lanthanides on the periodic table. "

我的化学课本解释说，锕系元素是一系列放射性元素，包括铀和钚，它们在元素周期表上位于镧系元素下方。

Illustration outermost

outermost adjective

/ˈaʊtɚmoʊst/

最外面的，外部的

"The outermost layer of the onion was paper-thin. "

洋葱最外面的一层薄如纸。

Illustration chemistry

chemistry noun

/ˈkɛm.ɪ.stɹi/

化学，化学科学。

"The chemistry class focused on how different elements combine to form new substances. "

化学课的重点是不同的元素如何结合形成新的物质。

Illustration periodic

periodic adjective

/ˌpɪə-/ /ˌpɪɹiˈɑdɪk/ /ˌpɜːɹaɪˈɒdɪk/

周期性的，定期的。

"My doctor recommended periodic checkups for good health. "

为了身体健康，我的医生建议我定期进行体检。

Illustration reactions

reactions noun

/riˈækʃənz/ /riˈækʃnz/

反应，回应，感想

"The announcement of the verdict brought a violent reaction."

对判决的宣布引来了强烈的反应。

Illustration orbitals

orbitals noun

/ˈɔːrbɪtəlz/ /ˈɔːrbɪdəlz/

轨道，电子轨道。

"The chemistry textbook explained how different orbitals dictate the locations where electrons are most likely to be found around the atom's nucleus. "

化学课本解释了不同的电子轨道如何决定电子最有可能出现在原子核周围的位置。

Illustration elements

elements noun

/ˈel.ɪ.mənts/

要素, 成分

"Letters are the elements of written language."

字母是书面语言的基本要素。

Illustration chemists

chemists noun

/ˈkɛmɪsts/

化学家，化学工作者

"The chemists at the pharmaceutical company are working to develop a new medicine. "

这家制药公司的化学家们正在努力研发一种新药。

Illustration lanthanum

lanthanum noun

/ˈlænθənəm/

镧

"The chemistry student learned that lanthanum is a silvery metal used in some camera lenses. "

化学系的那个学生了解到，镧是一种银白色的金属，被用于某些照相机镜头中。