How to improve the efficiency of the linear ultrasonic motor with hard contact materials (HLUSM ) or the precision motio......

目的 探讨颅内微小动脉瘤手术治疗的方法及其安全性和有效性.方法 回顾性分析27例颅内微小动脉瘤患者经手术治疗的33个直径≤4 mm......

A mathematical model of landfill gas migration was established under presumption of the effect of gas slippage. The slip......