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国外一些发达国家和知名厂商的桩孔机械正在向一机多能及大型化的方向发展,为满足施工工艺和操作上的要求,这些桩孔机械在设计时采用的某些结构形式很值得我
Some well-known foreign countries and the well-known manufacturers of pile-hole machinery is to a multi-functional machines and the direction of large-scale development, in order to meet the construction process and operational requirements of these pile-hole machinery in the design of some of the structures used is worth my