chemicals 點解
回答 (3)
2008-04-20 5:10 am
chemicals are substances that are used or produced in chemical processes.
2008-04-19 5:01 am
1.substance made by or used in a chemical operation(n)
2.of or made by chemistry(adj)
2.of or made by chemistry(adj)
參考: me
2008-04-19 4:59 am
when there is a reaction e.g different smell,look
收錄日期: 2021-04-13 15:27:07
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