Although high-efficiency targeted delivery is investigated for years,the efficiency of tumor targeting seems still a har......

Problems about surface mounting process for fine pitch devices and reasons on solder bridging of L type leaddevices weld......

论述了回火马氏体的２０钢激光加热淬火后的组织及奥氏体晶粒变化的特征。结果表明：钢的非平衡组织经激光超高速加热淬火时，其奥氏体晶粒......