进出口货物名称中英对照(80)a ... core cone bit 牙轮取心钻头 core drill bit 岩芯钻头 core drill for wood working 木工空心钻 ...
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This allows the bit to drill around a central cylinder of rock, which is taken in through the bit and into the core barrel.
这样允许钻头围绕岩石的中心圆柱体钻进，并通过钻头进入取芯桶。
A drill bit used for obtaining core samples in concrete or rock formations.
钻头被用来在水泥或岩层获取岩芯样品。
The invention comprises a handle and a drill bit, wherein the drilling bit has a trocar structure consisting of two parts, namely a sleeve and a tube core needle.
本发明包括手柄和钻头，钻头为套管针结构，包括套管和管芯针两部分组成。
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