| 1. | In order to generally analyze the performance of the horizontal directional drill ( hdd ) , several subsystem models , e . g . mechanical subsystem model , hydraulic subsystem model , strength model and control subsystem model are built and integrated into a whole virtual hdd model through parameter associations
摘要为了全面分析水平定向钻的性能，针对不同领域，分别建立了机械、液压、强度和控制等子系统模型，通过参数关联形成了一个完整一致的水平定向钻整机虚拟样机模型。 |
