峒室 meaning in Chinese

chamber
◇峒室爆破 chamber blasting; 峒室开凿 chamber excavating; 峒室支护 chamber support

Application of small cave blasting in road construction
小型峒室爆破技术在公路建设中的应用
Positional parameter engineering calculation of divided charges in chamber blasting
峒室爆破中分装药包位置参数的工程计算
Numerical analysis of the partial unstability of big underground surrounding rocks
大型地下峒室围岩局部失稳与支护数值分析
Study on roadway room deformation forecast in deep shaft isolated island pillar working face crossing mining
深井孤岛煤柱下工作面跨采巷道峒室变形预测
Aplication of short delay pre - splitting blasting technology among and inside deep holes in engineering blasting of fragment room
孔间微差预裂爆破技术在破碎峒室工程爆破中的应用

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