GB/T 37199.2-2018 塑料 聚丁烯(PB)模塑和挤出材料 第2部分:试样制备和性能测定

文件大小 : 749.52 KB

文档格式 : PDF电子版

文档分类 : 行业标准

更新时间 : 2024-08-24 08:02:34


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/27/00/34/2700348.png): failed to open stream: operation failed in /www/wwwroot/0ppt.com/e/data/tmp/dt_temptext14.php on line 182