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Terms for subject Explosives and Explosive Ordnance Disposal containing 口石 | all forms
ChineseEnglish
有裂缝和裂隙的岩石。爆口cracked and fractured rock
现场实验发现、孔口周围的大部分飞石沿着炮孔轴线方向抛掷出去It is discovered in filed experiments that most of the collar flyrock is thrown in a direction fallowing the drill hole axis
现场实验发现、孔口周围的大部分飞石沿着炮孔轴线方向抛掷出去It is discovered in filed experiments that most of the collar flyrock is thrown in a direction fallowing the drill holding axis
金刚石小口径钻进采用直径小于76mm 金刚石钻头的钻进small-hole drilling

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