sinking headframe

同义词释义

1)sinking headframe,凿井井架2)sinking tower,凿井井架3)Drilling tower for Shaft,竖井凿井井架4)shaft sinking,凿井5)well drilling,凿井6)pit sinking,凿井7)schaft sinking,凿井8)shafting,凿井9)special shaft sinking,特殊凿井10)sinking hoist,凿井绞车