universal indicator
音標發(fā)音
- 英式音標 [?ju?.n?.v??.s?l ??n.d?.ke?.t?r]
- 美式音標 [?ju?.n?.v??.s?l ??n.d?.ke?.t??]
- 英式發(fā)音
- 美式發(fā)音
基本解釋
- (化學上用的)通用指示劑(用來測定物質(zhì)的酸堿性)。
英英字典
- a chemical solution made from a mixture of substances that produce many different colour changes according to different pH levels, used to discover how acid or alkaline something is