【机】 高架单轨

overhead cost

elevated tank【化工】;header tank【化工】;overhead tank【化工】

overhead allocation

unabsorbed burden【会计】;unabsorbed overhead【会计】;unapplied overhead【会计】

manufacturing overhead control

under-applied manufacturing overhead

manufacturing overhead

high-altitude operation car【车辆】;overhead working truck【车辆】