According to the interaction of three shallow tunnels with large section, the analytical solution to rock pressure has b......

On the S-lay pipeline analysis, the stiffened catenary method which usually can only be used to determine the configura......

On the S-lay pipeline analysis, the stiffened catenary method which usually can only be used to determine the configurat......

介绍了自滚切刀具的基本原理与基本概念,说明了其适宜于高速切削的原因,并对自滚切刀具的优、缺点进行了评价.......

简单介绍了定向钻穿越施工中的无线、有线导向系统的组成和性能.对穿越施工过程中遇到的模糊导向问题、穿越参数的选择和调节都进......