Stone material maintenance 石材养护

material maintenance support 装备维修保障

aviation material maintenance 航空装备维修

material maintenance support system 装备维修保障系统

material detail maintenance edit list 材料明细维护编辑清册

material detail file maintenance 材料明细档维护

Automotive maintenance material workers 汽车维修材料工

maintenance material cost [交] 保修材料费

material detail file maintenance-blanket purchase 材料明细档维护

maintenance material 修补材料