爆前试验证明了钻孔底部柔性垫层的隔震作用。
The partition function of flexible cushion on the bottom of explosive holes was proved by experiments before explosion.
阀体应该钻孔和攻丝用于在顶部和底部外壳的压力连接。
Valve body shall be drilled and tapped for a pressure connection on top and bottom of the housing.
基础采用底部后压浆钻孔灌注桩体系。
The post-pressure grouting bored pile is used in the foundation de…
基础采用底部后压浆钻孔灌注桩体系。
The post-pressure grouting bored pile is used in the foundation de…
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