目的:观察经皮激光椎间盘减压术(Percutaneous Laser Disc Decomperssion PLDD)治疗腰椎管狭窄症的临床疗效. 方法:应用脉冲式ND:YAG激光治疗腰椎管狭窄症患者32例,其中得到连续两年随访2l例,男11例,女10例,平均年龄64岁.21例均有间歇性跛行,根据影像学检查分为两组,A组为前后方均受压的"混合性腰椎管狭窄症"6例...
Price parity for new Nissans 来自 国家科技图书文献中心 喜欢 0 阅读量: 3 作者: J Attwood 摘要: Qashqai and Juke won't jump in price when they go electric-only later this decade. Nissan is aiming for the next-generation, electric-only Juke and Qashqai - which will be designed, ...