GB/T 34311-2017体育场所开放条件与技术要求总则国家标准
英文:Operation condition and technical requirements for gymnasium and stadium—General provisions GB/T 34311-2017介绍: 国家标准《体...
英文:Operation condition and technical requirements for gymnasium and stadium—General provisions GB/T 34311-2017介绍: 国家标准《体...