目的观察超声乳化手术中应用分层劈核法(chop)联合钻核法(drill)处理硬核白内障的临床效果。方法32例(32只眼)晶状体核硬度为Ⅳ级......

The presence of abscisic acid (ABA) in Korean pine seed extract was identified by gaschromatography-mass spectrometry (......

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......

A river plume dynamics analysis was made in Namtso Lake by using a sigma coordinate non-hydrostatic numerical ocean mode......