The said tombarthite is one of the kinds such as lanthanum, europium nitrate, erbium nitrate, cerous nitrate and neodymium nitrate.
所述稀土是指硝酸镧、硝酸铕、硝酸铒、硝酸亚铈、硝酸钕中的任一种。
The said tombarthite is one of the kinds such as lanthanum, europium nitrate, erbium nitrate, cerous nitrate and neodymium nitrate.
所述稀土是指硝酸镧、硝酸铕、硝酸铒、硝酸亚铈、硝酸钕中的任一种。
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