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aqteng

新虫 (初入文坛)

[求助] 再问三氧化二镨(Pr2O3)怎么制?

用硝酸镨和氨水共沉淀法制出来的是Pr6O11啊
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zhaohaohao

铁杆木虫 (著名写手)

资深乐迷

抢个沙发!呵呵...
处世不宜与俗同,亦不宜与俗异;作事不宜令人厌,亦不宜令人喜。
2楼2011-07-05 10:45:30
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3楼2023-07-05 20:11:53
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