轻稀土通常是指镧、铈、镨、钕、钷、钐和铕七种稀土元素（也有一种分法是镧、铈、镨和钕）的总称。它们具有较低的原子序数和较小质量。
...下沉的洋壳及其沉积物,在地幔环境熔融交代改造原始地幔,使中亚地区的地幔自古生代晚期以后逐渐转换为整体富碱、富含轻稀土(LREE)和不相容元素的富集地幔。被改造了的富集地幔在中新生代沿裂谷带或大型走滑断裂薄弱带上涌,形成了中新生代幔源岩浆的喷发和侵位。
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... 提纯 purification 轻稀土 light rare earths 中稀土 middle weight rare earths ...
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CeO2 is a cheap and of use wide light rare earth oxide material. After it becomes nanoparticle,it will show some new properties and applications like other inorganic naoparticles.
CeO_2是一种廉价、用途极广的轻稀土氧化物。
参考来源 - 沉淀法制备纳米二氧化铈·2,447,543篇论文数据，部分数据来源于NoteExpress
稀土有两种，一种是重稀土，一种是轻稀土。
Rare earth consists of two categories: one is heavy rare earth, the other one is light rare earth.
对轻稀土在农业、纺织印染、玻璃陶瓷工业方面的应用作一简介。
The application of light rate earth elements on agriculture, textile, glass and ceramics industry was briefly described.
文中指出，解决轻稀土过剩的有效途径是把轻稀土应用到农业中去。
The efficient way to absorb the surplus of light RE is to use it in agriculture.
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