GB/T 33928-2017 往复式内燃机排气消声器测量方法声压法排气噪声声功率级和插入损失及功率损失比

文件大小 : 8517.72 KB

文档格式 : PDF电子版

文档分类 : 国家标准

更新时间 : 2023-12-21 11:24:46


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/61/11/00/61110049.png): failed to open stream: operation failed in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182