oleum

基本解释

The increasing concentration of oleum or the reaction temperature or the ratio of oleum to naphthalene results in the decreasing yield of 1,5-Naphthalenedisulfonic acid.
发烟硫酸浓度的增大、反应温度的提高、发烟硫酸与萘的配比的增大，都使得1 ，5-萘二磺酸收率降低。
In the method, the reaction of the oleum and the oxyful relatively improves the concentration and the oxidization capability of the oxyful and reduces the decomposition speed of the oxyful;
本方法中发烟硫酸与双氧水反应相对提高了双氧水的浓度，提高了双氧水的氧化能力，降低了双氧水的分解速度；
ip.com
Through the many years development the quality of the China made spiral submerged arc welded steel pipe have improved immensely, the pipe Mills of petr oleum industry are of the first ranks.
国产螺旋缝埋弧焊钢管经过多年的发展，已经取得了较大的进步，尤其是石油行业内几家钢管厂的产品代表着国内最高水平。