Warning: file_put_contents(): Only 0 of 6216 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/totle.com.cn/index.php on line 55 permeability coefficient英英字典_permeability coefficient剑桥英语解释_permeability coefficient柯林斯英文解释_乐豆毛深蓝词典
1. N the volume of an incompressible fluid that will flow in unit time through a unit cube of a porous substance across which a unit pressure difference is maintained 滲透系數