Warning: file_put_contents(): Only 0 of 5070 bytes written, possibly out of free disk space in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 unit process英英字典_unit process剑桥英语解释_unit process柯林斯英文解释_94生活常识网有道词典
1. N any of a number of standard operations, such as filtration or distillation, that are widely used in various chemical and process industries 标准单元过程[chemical engineering]