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"euxenite:a lustrous, blackish-brown rare-earth mineral consisting primarily of cerium , erbium, titanium, uranium, and yttrium."

"黑金矿:一种光亮的棕黑矿石,主要由铈、铒、钛、铀钇构成."

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The study on technical process and kinetics of PVC heat steadilizer yttrium stearate by saponifying method was carried out.

采用皂化法制PVC稳定剂-硬脂酸,并进行动力学研究。

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arna, arnatto, Arnauld, Arndt, Arne, Arneb, Arnel, arnentoflavone, Arnhem, arnica,

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3G, 401(K), a,

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趣味化学实验:Periodic Videos

This is designated Ytterby Mine, a historical landmark for the discovery of four periodic elements: yttrium, terbium, erbium, and ytterbium.

这被 Ytterby 矿,它是发现四周期性元素:镱的历史里程碑。

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Arnsberg, ARO, A-road, Arochlor, arochlors, AROD, arofene, Arofining, Aroflat, Arogel,

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3G, 401(K), a,
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