Development of such distributed feedback heterostructure lasers requires crystal growth on corrugated layers.研制这种分布反馈双异质结构激光器要求在皱折层上生长出单晶层.We produce metal plates and corrugated sheets in different thicknesses.我们生产不同厚度的金...
Industrial orientation: Oil refining fine chemical industry engineering plastics synthetic rubber.产业定位炼油、乙烯、精细化工、工程塑料、合成橡胶.Steam condensate was produced by steam exchanging heat during oil refining.蒸汽凝结水是在石油炼制生产过程中蒸汽经换热后...
Objective To study the surgical treatment of the acromegalic cardiomyopathy.目的探讨肢端肥大症性心肌病的神经外科手术治疗和疗效.Objective To analyze effect of propyl gallate in patients with ischemic cardiomyopathy.目的研究培丙酯对缺血性心肌病的治疗作用.Conclusion ...