GB/T 33735-2017中小学校地震避险指南国家标准
英文:Guideline of avoiding the earthquake danger for primary and middle schools GB/T 33735-2017介绍: 国家标准《中小学校地震避险指南》由TC225(...
英文:Guideline of avoiding the earthquake danger for primary and middle schools GB/T 33735-2017介绍: 国家标准《中小学校地震避险指南》由TC225(...