foreseen hole
英 美
预留孔
预留孔 foreseen hole; preformed hole; preparedhole 预留区 future area; reserve zone .
One hydraulic operated tap hole driller and one 0.16 m3 hydraulic clay gun to be installed at the same side of the tap hole is foreseen.
其中液压启闭塔孔钻机和一个0.16立方米液压泥炮将安装在同一侧的塔孔预见的。
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