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...
The EP antiwear property is different that it contains different additives.不同的添加剂配伍,聚脲润滑脂的极压抗磨性也不一样.The antiwear & friction reducing mechanism of nano materials was summarized.综述了纳米材料的 抗磨 减摩机理.The antiwear hydraulic oil ...
He received a black eye in the tussle.他在扭打中眼睛被打得青紫.His black eye was a beaut.他的那只被打得发青的眼睛美极了.I'll tell Daddy, and then you'll be sorry because he'll give you another black eye.我会告诉爸爸,到时候有你好受的,因为爸爸会再揍你一顿。...