JB/T 12991-2018 机床电气设备及系统金属带锯床能效等级及评定方法
文件大小 : 429 KB
文档格式 : PDF电子版
文档分类 : 行业标准
更新时间 : 2024-11-18 08:17:33
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/61/20/36/61203602.png): failed to open stream: operation failed in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182