目的探讨纤维支气管镜（纤支镜）肺泡灌洗联合振动排痰对重症肺炎机械通气（MV）患者的疗效。方法采用前瞻性随机对照临床研究方法，选择2014......

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 new hybrid piezoelectric ultrasonic motor, which consists of one rotor and two stators, was proposed in this paper. In......