The trenchless pneumatic hammers which don t rotate themselves during drilling include impact moles, pipe ramming hammers and pipe bursting hammers.
穿孔过程中自身不回转的非开挖气动锤包括冲击矛、夯管锤和爆管锤。
The trenchless pneumatic hammers which don t rotate themselves during drilling include impact moles, pipe ramming hammers and pipe bursting hammers.
穿孔过程中自身不回转的非开挖气动锤包括冲击矛、夯管锤和爆管锤。
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