The process of chlorine leaching - purification - electrowinning for nickel extractioncopper residue is investigated.研究通过氯气浸出 - 净化 - 不溶阳极电积法生产电镍的工艺过程.The research results of recovering copper by electrowinning from conce...
介绍了丙二酰氧基硼氢化钾的制备及其原位与烯烃的选择性硼氢化.The preparation of potassium malonyloxyborohydride in situ and its selective hydroboration alkene are described.叙述了丙二酰氧基硼氢化钠的制备及其原位与烯烃的选择性硼氢化反应.The preparation of sodium malonyloxyborohydrid...
He looked vaguely around the room as he spoke, his mind elsewhere.他边说话边茫然地打量着房间，心不在焉的样子。"I'm not sure," Liz said vaguely.“我不确定，”利兹含糊其词地说。Arnold felt vaguely embarrassed.阿诺德感到有点儿尴尬。...