free available chlorine 中文意思是什麼
free available chlorine
解釋
游離性有效氯-
In addition, easy residual chlorine testers are available at the twd to facilitate self - testing of tap water quality at home at all times. the testers are free of charge and available at all service counters of the twd
另外,本處也備有簡易餘氯試劑,方便您在家隨時可自行檢驗自來水水質,歡迎向本處各服務櫃臺免費索取。
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