Horizontal Directional Drill

• 水平定向钻

Horizontal Directional Drill的用法和样例：

例句

1. Directional drilling is an advanced construction method in river crossing.
   定向钻穿越河流是一种比较先进的施工方法。
2. Research on mechanical parameters of pipeline crossing by horizontal directional drilling is rare and the engineering is almost designed by experiential method.
   水平定向钻管道穿越中力学参数的理论化可为工程实际提供参考。