PH: Perbezaan antara semakan
Kandungan dihapus Kandungan ditambah
kTiada ringkasan suntingan Teg: Suntingan sumber 2017 |
Tiada ringkasan suntingan |
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== Pautan luar ==
* [https://www.neonics.co.th/ph/what-is-ph.html What is pH ] Theory of Acid and Base
*[http://www.aqion.onl Online pH Calculator]
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