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...
Objective To study the clinical effects of demineralized dentin matrix ( DDM ) as a apexificating agent.目的观察同种脱矿牙本质基质 ( DDM ) 用于根尖诱导成形术的临床效果.Overlapping , nonoverlapping and overrelaxation DDM are discussed.讨论了重叠DDM 、 非重...
蒸汽和水力可用来发电.Steam and water power are used for the generation of electricity.在19世纪人们大规模使用水力来发电.In the 19 th century waterpower was widely utilized to generate electricity.这里正筹划建设一座水力发电站.Plans are being drawn up to build a...