diethyl oxalate 中文意思是什麼
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Diethyl oxalate for industrial use
工業用草酸二乙酯 -
This paper discussed the material of equipmen t which was used to prepare diethyl oxalate by co coupling - regeneration reactio n wi th the method of weight. the seven kinds of metal material, such as 306, 314l, 316l, zr, ti ( 2 ), ti ( 10 ), 1cr18ni9ti and one kind nonmetal material ( pe ) have been hung in the liquid compound in the regeneration reactor for 1500hours. the experiment ind icative that the corrosion rate of the 306 is the biggest, in the after is 316l, t i ( 10 ), 1cr18ni9ti, zincorium ( zr ), ti ( 2 ), that of pe is lest ; 1cr18ni9ti is the better material of equipment
沙河市散裝水泥事業起於上世紀九十年代初，經過十多年艱苦曲折的發展，目前我市水泥散裝率達到20 %左右，這一水平還達不到河北省水泥平均散裝水平，與先進省市"發散"水平相比更是相差太遠.我們對發達國家和我國"發散"先進省市的考察和對比分析，可以看出除國家行政推動外，市場有效需求是拉動散裝水泥發展的重要因素
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