通过对山西潞城黄土的微观结构分析研究,得出黄土的微观结构由两部分组成:松散结构和密实结构.松散结构的骨架主要由粉粒构成,粘粒......

Investment casting has been widely recognized as the best option in producing TiAl components with key benefits of accur......

Background The role of nasal obstruction in the pathogenesis of obstructive sleep apnea/hypopnea syndrome (OSAHS) has be......