fuming sulfuric acid meaning in Chinese

发烟硫酸

A new surfactant heavy crude oil sulfonates ( hcos ) was synthesized from daqing heidimiao oil with fuming sulfuric acid
考察了酸烃比、反应温度、反应时间对磺化反应的影响。
This method has been used for many times and similar operation time and product are obtained as that using the treatment with a mixture of sulfuric acid , nitric acid and fuming sulfuric acid
经过多次试用，其操作时间和得到的结果，与以前使用的硫酸、硝酸加发烟硫酸的方法基本相同。
Further experimental investigation and theoretical analysis on the structure and properties of undoped and doped polyaniline are carried out by using several inspecting methods and instruments . using fuming sulfuric acid sulfonating emeraldine base ( eb ) , sulfonated polyaniline ( span ) is synthesized . the results show that it has higher solubility and good conductivity , span with different sulfonation . degree ( sd ) possesses different conductivity
借助于一系列的现代分析手段对本征态及掺杂态的聚苯胺的电学、光学、热学等性能进行了分析，结果表明，本征态聚苯胺具有高的热稳定性，不同酸掺杂的聚苯胺具有不同的光学、电学性能。