taperness相关论文
There are many small-scale intermontane basins in the east and west sides of Sobaek Mountains.It was generally thought t......
通过对广州地铁六号线盾构3标段管片设计、选型及施工的研究,论述了在盾构隧道曲线段的通用环管片和左右转管片的楔形量、转弯能力......