derrick boom
短语词组
- derrick k boom 吊杆
- derrick k boom rest 吊杆托架
- derrick boom rest 吊杆托架
- Derrick boom heel fittings 懸臂起重機吊杆底腳裝置
- light derrick boom 輕型吊杆
- derrick boom for dipper [機]鏟鬭吊杆
- Derrick boom for anchor 吊錨杆
- heavy derrick boom 重型吊杆重吊杆
- inboard derrick boom 艙口吊杆 返回 derrick boom