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MOBILE GROOVE MACHINE FOR DRILLING MICROTUNNEL, TUNNEL AND WELLS AND A DEEP DRILLING MACHINE PROVIDED WITH A RE-ENTRANT SUPERIMPOSED IMPACT TOOL
MOBILE GROOVE MACHINE FOR DRILLING MICROTUNNEL, TUNNEL AND WELLS AND A DEEP DRILLING MACHINE PROVIDED WITH A RE-ENTRANT SUPERIMPOSED IMPACT TOOL
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机译:用于钻探微隧道,隧道和井的移动式沟槽机以及一种深钻机,该钻机配有重入式叠加冲击工具
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摘要
The invention relates to a microtunnel, tunnel and well mobile groove drilling machine and deep drilling machine provided with a re-entrant superimposed impact tool
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