GB/T 43609.1-2023建筑施工机械与设备混凝土及砂浆制备设备第1部分:术语和商业规格国家标准
英文:Building construction machinery and equipment—Plants for the preparation of concrete and mortar—Part 1:Terminology an...
英文:Building construction machinery and equipment—Plants for the preparation of concrete and mortar—Part 1:Terminology an...