DRILL RIGS tower over the silos on farms in Pennsylvania.
宾夕法尼亚的农场，一座座钻塔高耸，俯视着贮粮的圆仓。
2
The 12 meter high tower is located on the edge of a small rocky outcrop, siting on simple anchor points drill directly into the bedrock to minimise the buildings impact on the natural environment.
12米高的塔坐落在岩石的边缘，为了减轻对自然环境的影响，地基采用在岩石上设立简单的锚固点的方式。
3
Combining can equip to drill Xian two to use power knife tower and C stalk, can save an assistance operation time, exaltation process a production efficiency.