牵链输送机 drag chain conveyor
牵引链 [机] [矿业] drag chain ; haulage chain ; tow chain ; pulling chain
牵链子者 bear leader
牵链运送机 drag chain conveyor
链状牵开器 chain retractor
牵引链输送机 [机] drag-chain conveyor
牵引链轮 driving chain sprocket ; traction chain-gear
无链牵引采煤机 [矿业] chainless hauled shearer
无链牵引 chainless haulage
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