| 1 | Most of the digging , moving and compressing of earth was done by machines. | |
| 2 | Depressed trough, manhole edges and other places where the roller can not reach shall be compacted with frog rammer. | |
| 3 | In addition to rammers and smaller vibration plates , a whole range of other products for the domestic market and for export worldwide is currently produced in the USA . | |
| 4 | Close to the coast along the Yellow River in Qinghai bow, chant, put wood chant, chant forest with logging, agricultural district ramming chant, playing wall chant, chant, etc. play flail. | |
| 5 | Machine preparation: loading machine, tip lorry, 8T road roller, frog rammer, plate-type concrete vibrator, insertion-type concrete vibrator, sewage pump. |
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