GB/T 28386-2012 印刷、纸加工、造纸机械和辅助设备的噪声测量方法 准确度等级2和3
文件大小 : 0 KB
文档格式 : PDF电子版
文档分类 : 国家标准
更新时间 : 2024-04-17 17:47:39
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/24/68/88/2468883.png): failed to open stream: operation failed in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182