High pressure ring-shaped DTH drills are key equipment for underground high level large diameter long hole mining.

高气压环形潜孔钻机是地下矿山高阶段大直径深孔采矿的关键设备。

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This paper describes the effects of bottom water cushion on long hole blasting.

本文论述了水垫层在深孔爆破中的作用。

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In view of long hole section, milt-point, disconnected channels of Xing 1~3 block in Daqing oilfield, proposed countermeasure for detect and treatment channels outside tube.

针对大庆油田杏1~3区乙块三次加密试验区大段、多点、不连续窜槽井问题，提出了相应的管外窜槽检测及治理对策。

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A huge hole was torn in the front of it a long time ago.

VOA: special.2010.05.12

Today's deal introduces a lot of certainty to US income tax rates but it leaves nearly all the key spending issues up in the air - and it does not pave the way for the rise in tax revenues, relative to GDP, which most economists think will be crucial to filling the long-term hole in America's federal budget.

BBC: Cliffhanger: Still hanging

Echoing statements heard not long ago at Jackson Hole, Bernanke tried to disprove what he sees as misunderstandings as to how asset purchases work.

FORBES: Bernanke: 'I Don't Think Our Tools Are That Strong'

So it's going to take quite a long time to fill that hole.

WHITEHOUSE: Press Briefing