Supporting the use of impact drilling electric drill. Drilling, hole spacing with hole depth should meet the design requirements.

钻孔使用配套冲击电钻。钻孔时，孔洞间距与孔洞深度应满足设计要求。

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It has been proven through experiment that the control system can meet the requirements of impact drill-in conditions to implement automatic impact drill-in.

通过试验，证明该控制系统能够满足冲击钻进工况的要求，实现自动冲击钻进。

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The fundamental principle hardware configuration and software design of a microcomputerbased automatic control system for winch type impact drill rig is described.

本文介绍了卷扬式冲击钻机微机自动控制系统的基本原理、硬件的组成和软件的设计。

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Thompson said that while most clubs don't work on any specific late-game sequences a soccer equivalent to American football's "two-minute" drill they do have certain practice-field exercises that directly impact the closing minutes.

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He added that the company who own the exploratory licences, Tamboran has made public plans for 200 "nine acre concrete drill pads" should fracking go ahead, and local people were concerned about the impact on Fermangh's core economic drivers of tourism, fishing and agriculture.

BBC: Hydraulic fracturing