- derrick floor sill
- 钻台: drill block; drill floor
- 横梁: crossbeam; cross member; cro ...
- 阳台横梁: pony girder
- 钻台: [工业] drill block; drill floor
- 横梁: crossbeam; cross member; cross girder; bunton; crossgirder; crosssill; cross spreader (机座的); dormant; girder frame; transom; capping; cappice; bridging beam; stull; string-piece; cross-piece; crossrail; headtree; headpiece; needle beam (支承桥面的)
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