GB/T 22517.7-2018 体育场地使用要求及检验方法第7部分∶网球场地
文件大小 : 1237.11 KB
文档格式 : PDF电子版
文档分类 : 国家标准
更新时间 : 2023-12-31 16:40:32
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/61/10/57/61105709.png): failed to open stream: operation failed in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182