求翻译：唐山曹妃甸首钢京唐冷轧连退外委检修，主要负责冷轧连退全线液压系统的维护与保养，液压系统故障的排除与处理，制定相应的维护与保养方案，检修工时工序的安排，备件管理以及日常的巡检等。是什么意思？

Cold rolling continuous annealing in Tangshan, caofeidian Shougang Tang assign overhaul, is responsible for maintenance of hydraulic system for cold rolling continuous annealing line, hydraulic system trouble shooting and processing, development of appropriate care and maintenance programme, maintenance work processes scheduled, routine inspection of spare parts management and so on.