acid drop

Maintenance of Tubular heater Used in Heating Net during Shut-down Period The resulting solution was cooled on an ice bath and 130 ml of concentrated hydrochloric acid was added drop wise.

管壳式热网加热器停运时的维护与保养将得到的溶液在冰水中冷却，并将130毫升浓硫酸逐滴滴入。

Through pot planting experiment, the paper studied ion content of Fe, Mg, Mn, Ni in spinach and romaine lettuce under single and compound pollution of acid rain and drop in duct.

采用盆栽试验，研究了降尘、酸雨单一污染和复合污染对菠菜和生菜中铁、镁、锰、镍含量的影响。

The resulting solution was cooled on an ice bath and 130 ml of concentrated hydrochloric acid was added drop wise.

将得到的溶液在冰水中冷却，并将130毫升浓硫酸逐滴滴入。

The content of tartaric acid content is rises much more, and lactic acid, oxalic acid, and malic acid are a small drop.

酒石酸含量的增加幅度相对较大，而乳酸、草酸和苹果酸含量均有所减少。

OBJECTIVE: To determine the dissolution rates of Gastrodin and Ferulic acid in Tianning drop pills simultaneously.

目的：建立同时测定天宁滴丸中天麻素和阿魏酸溶出度的方法。

Preparation and Quality Standard of Oleanolic Acid Drop Pills

齐墩果酸滴丸的制备及质量标准研究