porousness

Luffa is the vascular bundle of the loofah gourd and belongs to the gourd family, with a unique porousness physical structure and excellent mechanical strength. It is mainly composed of cellulose, hemicelluloses and lignin. Cellulose content is up to60%.

丝瓜络是丝瓜果实中的维管束，属于葫芦家族，具有独特的多孔性物理结构和优良的机械强度，主要由纤维素、半纤维素及木质素组成，其纤维素含量高达60%。

after the first snow, sound is made over again. the porousness of snow makes it absorb sound.

第一场雪后，声音又发生了新的变化。积雪融化深入土壤，使地面吸收声音。

afghan politician and former mp daoud sultanzai told the bbc that the escape exposes "the porousness of our security apparatus" .

阿富汗政治家，前国会议员达武德桑坦赞告诉BBC记者，越狱暴露出“安全机制的多重漏洞。”

the porousness of snow makes it absorb sound.

雪的多孔性使得雪吸收声音。