... rare earth element 稀土元素 rare earth microelement 稀土微量元素 raspberry 覆盆子 ...
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The studies of microelement, rare earth element and isotope compositions that the Huogeqi polymetallic ore field was formed in rift basin of back arc continental marging during Proterozoic Era.
从微量元素、稀土元素、同位素等方面论证了霍各乞矿田中元古宙为大陆边缘弧后裂谷盆地构造环境。
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