该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

Trichomes (plant hairs) are present on nearly all land plants and are known to play important roles in plant protection,......

目的探讨产前常规普通二维超声(Two-dimensional ultrasound,TDU)筛选胎儿先天性心脏病(先心病)的可能性.方法对2 180例孕妇应用TD......