zero hour
英
美
- hour n.小时;钟点
- zero n.零;零度;最低点;完全没有;无足轻重的人或物adj.零的;无价值的;零视度的v.把...调零;瞄准;集中注意;迫近
Noun:
-
the time set for the start of an action or operation
用作名词 (n.)
- For the pressure to become zero, molecular bombardment must cease.
当压强趋近于零时,分子的碰撞就停止了。
- It is the distance between atoms corresponding to zero potential energy.
这就是相应于势能为零时的原子间距。