近十年来,美国建筑机械的配套在很大程度上是增加大功率机械的生产。美国现场采用的各种建筑机械,其结构完善的主要方向是:提高机器的单位功率;增加运输和工作速度;广泛地采用液压传动、优质钢和优质材 In the past ten years, the supporting facilities for construction machinery in the United States have largely increased the production of high-power machinery. The main directions for the construction of various types of construction machinery used in the United States are: improving the unit power of the machine; increasing the transportation and working speed; widely adopting hydraulic transmission, high-quality steel and high-quality materials.