Pneumatic drifter is a new short distance and small bore underground construction machine.
气动穿孔机是一种新型短距离、小直径地下施工机械。
This machine can bore through solid rock.
这台机器能钻透坚固的岩石。 。
This new model of drilling machine can bore through solid rock ten metres deep.
这台新型钻机能钻透十米厚的坚固岩石。
This new model of drilling machine can bore through solid rock ten metres deep.
这台新型钻机能钻透十米厚的坚固岩石。
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