双梁桥式起重机 Double beam bridge crane ; [机] Double girder overhead crane ; twin beam overhead bridge crane ; two beam overhead crane
电动双梁桥式起重机 electric double-beam bridge crane ; electric two-beam bridge crane ; twin beam overhead bridge crane
手动双梁起重机 hand-drive double beam crane ; hand-operated two-beam crane
双梁翼 two spar wing
双梁机翼 double spar
双梁吊车 double-beam crane
双梁行车 twin beam overhead crane
双梁桥架 [机] double girder bridge
联结双梁 connecting beam
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