Packing void fraction
[化] 填料空隙度; 填料层空隙度
🧩 词语组成解析
packing
['pækiŋ]
n. 包装，打包;包装材料;（缝隙）填料;
v. 压紧(pack的ing形式);装满;
void
[vɔid]
adj. 空的，空虚的，没人住的;（职位）空缺着的;无效的;
n. 太空，宇宙空间;空位，空隙;空虚感，寂寞的心情;
vt. 使无效;宣布…作废;取消;排泄;
🗣️ 情景例句
No, it's Ok.
不用， 没有关系 。
If there were no clouds, we should not enjoy the sun.
吃得苦中苦，方知甜中甜。
As the floods had put the telephone out of order, we could not find out how they were managing.
由于洪水造成了电话中断，我们无法了解他们情况。