GB/T 39559.2-2020 城市轨道交通设施运营监测技术规范第2部分∶桥梁

文件大小 : 2702.69 KB

文档格式 : PDF电子版

文档分类 : 国家标准

更新时间 : 2023-12-06 15:26:41


Warning: get_headers(): SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182

Warning: get_headers(): Failed to enable crypto in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182

Warning: get_headers(https://img.0ppt.com/61/11/80/61118022.png): failed to open stream: operation failed in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182