Litmus paper turns red in the presence of an acid.
石蕊试纸遇到酸就变红。
In this paper, the process of polymalic acid (PMLA) synthesis was studied.
本文对合成聚苹果酸的过程进行了研究。
The paper reviews the present situation of pivalic acid preparation in China.
本文评述了我国特戊酸合成的现状。
This paper studied the glutamic acid extraction in the isoelectric point mother solution.
本论文对等电母液中谷氨酸的提取进行了研究。
This paper discusses the forming mechanism and control factors of acid rain.
本文概述了酸雨的形成机制及影响酸雨酸度的因素。
The graft mechanism of lignosulfonate and acrylic acid was studied in this paper.
本文研究了木素磺酸盐和丙烯酸单体的接枝共聚机理。
The rise white corpuscle activity of (E)-10-hydroxy-2-decylenic acid is reported in this paper.
本文报道（E）-10-羟基癸烯-2-酸对急性辐射损伤机体的升白作用。
Paired electrosynthesis using glyoxylic acid as a model product has been studied in this paper.
以乙醛酸为模型产物，对配对电解合成技术进行了研究。
This paper review the extraction, biological activity and application of chlorogenic acid.
综述绿原酸的提取、生物活性及应用。
Liquid media: water, acid, alkali, mud fluid, paper pulp, dyestuff, oil, milk, alcohol, drinking. etc.
液体介质：水、酸、碱、泥浆、纸浆、染料、油类、牛奶、酒类、饮料等。
Liquid media: water, acid, alkali, mud fluid, paper pulp, dyestuff, oil, milk, alcohol, drinking. etc.
液体介质：水、酸、碱、泥浆、纸浆、染料、油类、牛奶、酒类、饮料等。
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