Diisopropyl succinate was synthesized from succinic acid and isopropanol with p - methyl benzenesulfonic acid as catalyst.摘要以丁二酸和异丙醇为原料及对甲基苯磺酸为催化剂,催化合成丁二酸二异丙酯.The usual thinners are water, ethanol, isopropanol, ethylene ...
AIDS can be spread among drug users through the use of shared syringes.艾滋病可能通过共用的注射器在毒品使用者中传播.This is a medical supplies company that produces disposable hypodermic syringes.这是一家生产多用途皮下注射器的药材公司.Old tires, carpet, syringe...
It taught only materialism, the gospel of mammon.它只是宣扬金钱至上的物欲主义。It is not every day that one meets a business-person who is not obsessed with Mammon.不贪财的生意人可遇不可求。It was possible to serve God and Mammon at the same time.敬...
Boron - substituted polyaromatic mesophase prepared by co - pyrolysis of a tar pitch with pyridine - borane complex under autogeneous pressure.以煤焦油沥青和吡啶硼烷为原料采用加压热缩聚工艺制备硼取代聚芳烃中间相沥青.A new syntan product prepared with tar p...