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1)  Light REE
轻稀土分量
2)  differentiation of light rare earth elements
轻稀土分异
3)  light-heavy RE fractionation
轻重稀土分馏
4)  Light rare earth
轻稀土
1.
Determination of light rare earth by calcein adsorptive catalytic voltammetry with solid amalgam alloy electrode;
固体汞合金电极钙黄绿素吸附催化伏安法测定轻稀土
2.
In this paper,the light rare earth-magnesium noduliztion alloys and inoculation alloys that has been used in produecting heavy section ductile iron rollers are introduced.
叙述生产轧辊类超厚大断面球墨铸铁件所用的轻稀土镁球化剂、孕育剂和复合球化、孕育处理过程及其对原铁水的要求,同时介绍了所生产轧辊的组织、性能和良好的使用效果。
3.
The influence of light rare earth oxides on the activity of Pd/Y-Al2O3 has been discussed in this.
研究了轻稀土氧化物添加对Pd/γ-AL2O3催化剂活性的影响。
5)  light rare earths
轻稀土
1.
The present paper aims to report its investigation of the cytogenotoxicity induced by dimethoate separately or jointly with the light rare earths to the root tips of Vicia faba.
研究了农药乐果与轻稀土乐果混合溶液对蚕豆根尖的细胞遗传毒性,探讨了稀土修复和稀土预处理对乐果染毒根尖的细胞遗传毒性的影响。
2.
The determination of the content of the soluble light rare earths in the soil samples was studied.
8m ol/ L 条件下 ,以 DBS-偶氮胂为显色剂并采用双波长方法消除钙的干扰 ,测定了土壤中可溶态轻稀土含量。
3.
Na2O-CaO-SiO2 system glasses with different light rare earths were prepared by melting-quenching,the effects of light rare earths on the chemical durability and density of Na2O-CaO-SiO2 system glass were investigated.
利用传统的熔融冷却法制备了轻稀土掺杂的Na2O-CaO-SiO2玻璃,研究了轻稀土掺杂对Na2O-CaO-SiO2玻璃的密度和化学稳定的影响。
6)  light rare-earth region
轻稀土区
1.
effective boson number in the light rare-earth region.
提出了一种计算过渡区——轻稀土区核的"有效"价核子对数亦即有效玻色子数的新方法。
补充资料:轻稀土元素
分子式:
CAS号:

性质:一般将稀土元素划分为两个亚族:(1)轻稀土元素包括镧、铈、镨、钕、钷、钐、铕七个元素,或称铈族(cerium group)稀土,它们具有较低的原子序数和较小质量;(2)重稀土元素(heavy rare earth elements, HREE),包括钆、铽、镝、钬、铒、铥、镱、镥,它们具有较高的原子序数的较大质量,有人将化学性质与重稀土元素相近的钆也列入重稀土亚族,因此重稀土元素也称为钆族(yttrium group)稀土。也有将稀土元素分为三个亚族:轻稀土元素(镧-钕),中稀土元素(middle rare earth elements, MREE,钷-钬),重稀土元素(heavy rare earth elements, 铒-镥)。

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