wire drill with eye 带眼的钢针钻
Drill And Steel Wire Gage 钻径及钢丝规
Wire-line Drill Tools 绳索钻探工具
wire-line coring drill pipe 绳索取心钻杆
Sand paper or a wire brush on an electric drill.
砂纸或钢丝刷对一个电钻。
The technique of diamond wire-line taking -coring drill has been applied in China for more than 30 years. The drill process and operation rules have been formed completely.
金刚石绳索取心钻进技术在我国已有30多年的应用历史，已经形成了一套较完整的钻进工艺和操作规程。
The wire-line directional drilling and coring technology can take cores and drill directionally without using down-hole motors.
绳索取心技术因其钻进效率高而广泛应用，但其无法实施定向作业。
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