GB/T 39056-2020古建筑砖石结构维修与加固技术规范标准
英文:Technical code for maintenance and strengthening of masonry structures on ancient buildings GB/T 39056-2020介绍: 国家标准《古...
英文:Technical code for maintenance and strengthening of masonry structures on ancient buildings GB/T 39056-2020介绍: 国家标准《古...