Suitable for acide with different concentration such as sulfuric acid , hydrochloric acid , nitric acid , phosphorous acid , chromic acid , acetic acid , etc , all kinds of organic solvent , mixture of different medium . used widely for corrosion resistant projects such as sincineratore , pickling tank , ferment tank , storage tank , lawn , electrobth , etc 适用于各种浓度的硫酸、盐酸、硝酸、磷酸、铬酸、醋酸等酸类及各类有机溶剂、各类介质的混合物中，可广泛应用于硫磺梦烧炉、酸洗、发酵、贮罐、地坪、电解槽等防腐蚀工程中。
Chemical industry : sodium carbonate ( the production of hydrochloric acid , hypo - fluoric acid and secondary chemicals ) ; the production of fluoride and chemical fertilizers ; circulation of reaction liquid in gas absorption tower ; grease extraction ( sulfuric acid ) ; reclamation and regeneration system of waste acid ; transportation of strong acids between chemical plants and vehicles 化学工业：碳酸钠化工业（盐酸、次氟酸、二次化学品的生产） ；氟化物、化学肥料的生产；气体吸收塔反应液体循环；油脂提炼（硫酸） ；废酸类的回收及再生系统；化工厂和运输车辆间的强酸类输送。
The result shows that the greater positive influence is from the dissolutions of carotene and browning reaction , next come the cembratriendid compounds and hypoglycemia compounds , while the negative influence is from indoles , toluene and some aldehydes , and the negative influence from the dissolutions of carotene and browning reaction is less 结果表明，对评吸结果影响较大的是胡萝卜素降解产物类和棕色化反应产物类；类西柏烷类和苯丙氨酸类中性致香物质的贡献较小；负面影响较大的成分主要集中在吲哚、甲苯及一些醛类上，类胡萝卜素降解产物类和棕色化反应产物类中的个别成分也有一定的负面影响。
In order to know about the utilization condition of nitrogen in wheat and rice when fertilize the new long - effect urea that process by humic acid material being used as depressor , the paper study the influence and the best proportion in lime soil that fertilize the new long - effect urea no . 4 to wheat and rice , the result indicate that jointed period is the key period that gramineous crop release the nitrogen 摘要为了了解施用新型长效尿素时，小麦、谷子氮素的利用状况，通过对冬小麦、春谷子的盆栽试验，研究了在石灰性土壤中，以腐植酸类物质为抑制剂加工而成的长效尿素四号，对小麦、谷子的氮素利用状况的影响以及最佳配比。
