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Rotary core diamond drilling equipment 取芯钻石钻进设备 ; 旋转金刚石心钻孔设备
They are different from that of conventional rotary drilling equipment.
这些设备与常用的钻进法设备不同。
There are several other kinds of rotary drilling equipment using the rotary principle in the construction of vertical shafts.
在建设竖井中，有一些其它种类的利用旋转原理的钻进法设备。
MAIT is the first company to research and manufacture the rotary drilling RIGS and related foundation equipment in the world, Mr.
是世界上最早开始进行旋挖钻机以及相关基础施工设备研发的公司。
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