GB/T 41495-2022混凝土泵车保养、维修及报废规范国家标准
英文:Specification for truck-mounted concrete pump maintenance, repair and scrap GB/T 41495-2022介绍: 国家标准《混凝土泵车保养、维修及报废规范》由...
英文:Specification for truck-mounted concrete pump maintenance, repair and scrap GB/T 41495-2022介绍: 国家标准《混凝土泵车保养、维修及报废规范》由...