GB/T 9966.2-2020 天然石材试验方法 第2部分：干燥、水饱和、冻融循环后弯曲强度试验
文件大小 : 607.49 KB
文档格式 : PDF电子版
文档分类 : 行业标准
更新时间 : 2024-07-14 11:03:39
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/28/72/62/2872622.png): failed to open stream: operation failed in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182