零时的英文：
zero hour
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。
When the galvanometer reads zero the circuit is in the null-balance position
当检流计的读数为零时，电路处于零平衡位置。
n. 零；零点；零度；没有
v. 瞄准；聚焦
These suitable values will be zero or infinity.
这些适当的数值可以是零，也可以是无穷大。
Make sure you are not dividing by zero.
确保不会除零。
The temperature will be above zero.
气温将在零度以上。
His hope was reduced to zero.
他的希望化为乌有。
These suitable values will be zero or infinity.
这些适当的数值可以是零，也可以是无穷大。
n. 小时；长时间；时刻；重要时刻；某个时间；整点；（工作办公的）固定时间
by the hour together
连续几小时|不断地
They enjoyed marching around the room hour after hour.
他们喜欢绕着房间一小时又一小时地行进。
We did an hour of gym.
我们做了一小时的体操。
The orders were given on the hour.
整点发布命令。
Corn the beef for twelve hours.
把牛肉腌十二小时。