在相同时间内，杨木单位表面积吸水量越多，其表面自由能越大。

The more the poplar of per unit area absorbed liquid, the more its surface free energy had in the same time.

youdao

在相同时间内，杨木单位表面积吸水量越多，其表面自由能越大。

The more the poplar of per unit area absorbed liquid, the more its surface free energy had in the same time.

youdao