酸碱指示剂,又称pH指示剂,是颜色随pH而变化的物质

答案是:

Acid-base indicators (also known as pH indicators) are substances which change color with pH.
出自  文鼎教育  >  乐山师范学院专业英语 A卷

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本题添加时间:2023/7/16 8:15:00