BC20270089
UID: 1960, Registered at 2024-9-3 10:02:48, last login at 2025-10-9 16:37:51, currently offline.
Solved 1 problems, RP: 6 (No. 696)
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CuS04·5H2O : 水灵灵的蓝铜 Fe : 老铁 CuSO4 + Fe = FeSO4 + Cu 再强的老铁也会被水灵灵的蓝铜掰弯啊~
Al·Cu 铝铜合金
钾钪（原子序数19、21）= wwk、mhy
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