The investigation on the insect antifeedant constituent in natural ecological system, provides not only the scientific e......

目的:评价动脉导管未闭(PDA)个体化介入治疗的临床应用价值.方法:8例应用标准型Amplatzer导管封堵器难以完成介入治疗的PDA患者,根......

论述了传统的周转箱模具滑块设在动模及定模的优缺点,介绍了周转箱模具滑块设在定模的关键技术要求和设计要点以及滑块位置动作分......

Based on the finite element method,the angled surface defects have been investigated by using the laser generated surfac......

Geometric properties of trajectories of angled projectiles under gravity pull are a popular common traditional theme dis......