Slow, careful curing of the concrete improves the hydration of the cement.混凝土的缓慢而精心的养护可以改善水泥的水化作用.ZL and lignosulphonate calcium don't harm the strength development of granular soil stabilized with cement.ZL和木钙两种缓凝剂...
Objective : To study the result of operation of metacarpophalangeal joints contracture in old peoples.目的: 探讨老年人掌指关节挛缩的手术效果.Objective : To evaluate the efficacy of domestic minitype plate and screw fixation metacarpophala...