Typical framed structures are beams, grids, plane and space frames or trusses.典型构架结构为梁 、 格栅 、 平面的和空间的框架或桁架.Such trusses are called simple trusses.这样的桁架称为简单桁架.The truss comprises four plane trusses each two panels and eac...
Some see themselves as the provider of ideas, while others view their role as essen-tially managerial.有些人自认为是出谋划策的人，其他人则认为他们主要是起管理方面的作用。The specified security provider could not be validated. Access was denied.无法验证指定的安全性...