他们在大气压强下做所有的实验，他们得到一级速率。
They were doing all their experiments at atmospheric pressure. They were getting a first order rate.
这使得该地区的空气质量减小，因此减少了大气压强。
This decreases the quantity of air in that area, and therefore decreases the atmospheric pressure.
例如，火星表面的平均大气压强仅为大约7.5毫巴(比地球上的1%还小)，地球上的大气压强超过1000毫巴。
For instance, atmospheric pressure on Mars is only a fraction of what it is here on Earth - averaging 7.5 millibars on Mars to just over 1000 here on Earth.
温度和压强，可能是一个大气压。
我预测，如果我们在这里某个地方，代表一个大气压的压强。
I can predict that if I'm looking at, let's put one bar here somewhere.
作用在那块钢铁上的压强约为3500个大气压，相当于三辆小型汽车的重量压在一块1平方厘米左右的地方。
The impact pressure on the steel is about 3,500 atmospheres. That is the weight of three small cars pressing on an area only a centimetre or so square.
作用在那块钢铁上的压强约为3500个大气压，相当于三辆小型汽车的重量压在一块1平方厘米左右的地方。
The impact pressure on the steel is about 3, 500 atmospheres. That is the weight of three small cars pressing on an area only a centimetre or so square.
总压强P等于惰性气体的分压，与A物质的蒸汽压之和，在我们的例子中总压强是一个大气压。
Such that the sum of the partial pressure of the inert gas, plus the partial pressure of A, is the total pressure. One bar, in our case.
当外界压强低于一个大气压时，水的沸点就降低。
When the external pressure is below atmospheric pressure, the boiling point will be lower .
当外界压强低于一个大气压时，水的沸点就降低。
When the external pressure is below atmospheric pressure, the boiling point will be lower.
当外界压强低于一个大气压时，水的沸点就降低。
When the external pressure is below atmospheric pressure, the boiling point will be lower.
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