研究了酸碱指示剂茜素黄R颜色的模糊特性。
The fuzzy character of colour of the acid base indicator alizarin yellow R is studied in the paper.
本发明还可加入酚酞或酚酞类酸碱指示剂作显色指示。
Phenolphthalein or indicator of such a kind is used as colour indicator.
一种棕色或金属绿色染料，C20 H12o7，用作酸碱指示剂和用于给丝织物染色。
A brown or metallic green dye, C20H 12o 7, used as a pH indicator and in dyeing textiles.
在一定酸碱性的甘氨酸溶液中加入适当的酸碱指示剂，可以实现颜色随溶液温度的变化而变化。
The pH response to temperature varied in different pH ranges of the aqueous solutions, and colors changed when acid-base indicators were added to the aqueous solution.
探讨了一本教材中关于酸碱指示剂作用原理的理论变色范围探讨，指出了该教材在理论变色范围推论中存在的问题。
Discussed a reason discoloration range of acid-base indicator function reason in a text book, pointed out some discoloration reason problems in the book.
实验首先对原料壳聚糖的物理性质进行测定：采用酸碱指示剂滴定法测定壳聚糖的脱乙酰度约为83%，应用粘度法测定其粘均分子量为十万左右。
The first work of this paper is measuring physical properties of chitosan. Degree of deacetylation(DD)of chitosan determined by acid base titration is about 83%.
实验首先对原料壳聚糖的物理性质进行测定：采用酸碱指示剂滴定法测定壳聚糖的脱乙酰度约为83%，应用粘度法测定其粘均分子量为十万左右。
The first work of this paper is measuring physical properties of chitosan. Degree of deacetylation(DD)of chitosan determined by acid base titration is about 83%.
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