While economists are free to theorise, company chairmen are concerned with actualities.经济学家们可自由创建理论，公司总裁们则关心现实情况。The Vice - Chairmen and the Secretary - General assist the Chairman in his work.副委员长、 秘书长 协助委员长工作.The Chair...
Objective : To investigate the therapeutic of avulsion fractures of spina iliac.目的探讨手术治疗髂棘撕脱骨折的疗效.The iliac crest is a common source for autologous bone graft.髂嵴是常用的自体取骨来源.Objective To investigate the clinical significan...