construction survey for shaft sinking
... 凿井施工测量 construction survey for shaft sinking 缆索凿井机 cable rig 液压凿井钻机 hydraulicshaftjumbo ...
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短语
注浆凿井法施工测量
construction survey for grouting sinking
普通凿井法施工测量
[测]
construction survey for conventional shaft sinking method
特殊凿井法施工测量
construction survey for special method of shaft sinking
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