对于液体（润滑油、水）泵的管流噪声，针对一齿轮泵和叶片泵的出口流动噪声设计了扩张管，并进行了试验测试。结果表明，对于泵的额定工况，所......

Two miners were fatally injured when a pillar bump occurred during retreat mining in a southern West Virginia coal mine.......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Using Geogrid-Reinforced Soil (GRS) we studied the working mechanism and design method of GRS at bridge approach with hi......

为了探索径向粗粉分离器的优缺点,利用基于离散相模型(DPM)框架的计算流体力学(CFD)预测径向粗粉分离器内流场、速度变化、压力变......