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.
發菸硫酸濃度的增大、反應溫度的提高、發菸硫酸與萘的配比的增大，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;
本方法中發菸硫酸與雙氧水反應相對提高了雙氧水的濃度，提高了雙氧水的氧化能力，降低了雙氧水的分解速度；
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.
國産螺鏇縫埋弧銲鋼琯經過多年的發展，已經取得了較大的進步，尤其是石油行業內幾家鋼琯廠的産品代表著國內最高水平。