Under complicated conditions, a building was partially demolished through controlled blasting. Mechanical pre-cutting was carried out before the building was collapsed by folding directional blasting.

在复杂环境条件下对一楼房进行保护性部分爆破拆除，采用机械预切割、折叠定向爆破倒塌的控制拆除方案。

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Modular system, combination of single-shaft cutter and extruder. No pre-cutting equipment required.

组合式系统整合单轴切碎机和挤塑机，无须配备预切设备。

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The Mechanical pre-cutting method used in soft ground is a kind of preparative support, it allows tunnel excavation work to be conducted efficiently under the safe pre-lining.

软土中的机械预切槽法是超前支护的一种，在预筑拱的保护下可以安全高效地开挖隧道。

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In a sense, however, the fact that states and districts are laying off teachers and cutting pre-K and other programs is itself a form of policy choice.

FORBES: Should Public Schools Replicate KIPP��s Long Hours?

Geoffrey Dicks of Royal Bank of Scotland said that retailers had refrained from cutting prices in the pre-Christmas rush.

BBC: UK inflation rises

Even before it had time to implement its price cutting strategy, its rivals launched a pre-emptive series of price promotions of their own.

BBC: Sainsbury profits slump