Unit Labor Hours单位劳动时间 Ultra-Long-HaulUltra-Long-Haul Unidirectional Long Haul单向的长途 Ultra- Long Haul超-长途 UL-approved, Inductive resistor, HorizontalUL-approved、感应电阻、水平 Ultra-Long Haul超长拖曳 University Lecture Hall大学演讲厅 Urban Land and Housing城市土地和房产