航天. 发表于 2013-11-25 06:33:14

uh....there are 6 types of equations....i think...忘差不多了。。
A -> BC 分解Shifting right...
AB -> C溶解Shifting Left...

NaCl 是盐。。盐不就是两个元素和起来的么。。。

航天. 发表于 2013-11-25 06:37:50

sorry..im just a typical asian nerd..no friends at school.

奶昔姐丶 发表于 2013-11-25 14:59:51

航天. 发表于 2013-11-25 08:33 static/image/common/back.gif
uh....there are 6 types of equations....i think...忘差不多了。。
A -> BC 分解Shifting right...
A ...

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