porousness
n. [物] 多孔性;孔隙率
例句
The porousness of snow makes it absorb sound.
雪花的多孔性使得它能吸收声音。
Spongy Resembling a sponge in elasticity, absorbency, or porousness.
与海绵一样有弹性、吸收性、多孔性的。