oleum

基本解釋

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(fā)煙硫酸濃度的增大、反應(yīng)溫度的提高、發(fā)煙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(fā)煙硫酸與雙氧水反應(yīng)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.
國產(chǎn)螺旋縫埋弧焊鋼管經(jīng)過多年的發(fā)展，已經(jīng)取得了較大的進步，尤其是石油行業(yè)內(nèi)幾家鋼管廠的產(chǎn)品代表著國內(nèi)最高水平。