A brown or metallic green dye, C20H 12o 7, used as a pHindicator 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。
2
It USES distilled water and alcohol to refine water soluble acid and alkali of sample and then test the extractive with PHindicator.
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。
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.