ph indicator
酸碱指示剂
常用释义
基本释义
- 酸碱指示剂
例句
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1·A brown or metallic green dye, C20H 12o 7, used as a pH indicator and in dyeing textiles.一种棕色或金属绿色染料，C20 H 12o 7，用作酸碱指示剂和用于给丝织物染色。
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2·It USES distilled water and alcohol to refine water soluble acid and alkali of sample and then test the extractive with PH indicator.用蒸馏水或乙醇水溶液抽提试样中的水溶性酸或碱，然后用酸度计或指示剂对抽提物进行测定。
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3·Taking alcoholicity as the indicator, the effects of initial sugar content, initial pH, inoculum size and temperature on the fermentation of the wine were investigated.以酒精度为指标，研究了初始糖度、初始酸度、接种量和发酵温度对凉薯果酒发酵的影响；
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4·A method of abstracting plant pigment as alternate indicator was described, and the change of colour at different pH ranges in various plant pigmentes was measured.本文综述了黑色素的理化性质和生理功能，以及林木植物黑色素的分离制取方法，并就黑色素的研究和应用进行了展望。