GB/T 23901.2-2019 无损检测射线照相检测图像质量第2部分∶阶梯孔型像质计像质值的测定
文件大小 : 448.61 KB
文档格式 : PDF电子版
文档分类 : 国家标准
更新时间 : 2023-12-10 15:11:52
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/61/11/62/61116243.png): failed to open stream: operation failed in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182