We investigate the dynamics of pedestrian counter flow by using a multi-grid topological pedestrian counter flow model.I......

一、关于问路的英语对话　　 经常会碰到老外问路，那么用英语怎么问路呢？当碰到老外问路的时候我们怎么用英语回答呢？如果我们出国留......

This paper is to improve the speed of k-nearest-neighbor search and put forward algorithms related to tangent plane esti......

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......