The phenyl ofp n propylbenzoic acid could be reduced by sodium alkoxide.醇钠可以还原对丙基苯甲酸中的苯环.Poly ( L - lactide ) ( PLLA ) was synthesized by ring - opening polymerization of L - lactide using cyclic tin alkoxide compound as...
The current arrangements for the care of severely mentally ill people are inadequate to meet their needs...目前对严重精神病患者的护理安排不足以满足他们的需要。For urban areas this approach was wholly inadequate...对于市区来说，这种办法根本不会奏效。If the supply o...