drill carriage造句怎么写

2、The technology of lining by rail shuttering drill carriage is emphatically introduced, which has a definite reference value to the lining construction of the shallow buried, under...

1、Mechanical model of the drill carriage with rotation and vibrating hammer for the new type taphole drill is established.

3、Mechanical model of the drill carriage with rotation and vibrating hammer for the new type taphole drill is established. The natural frequencies and mode shapes of the model are calculated.