Air temperature and vapor pressure deficit were the key factors affecting transpiration.
气温和蒸气压不足是影响蒸腾作用的关键因素。
There is vapor pressure lowering.
蒸汽压的下降。
You want to find the vapor pressure.
你需要找出蒸汽压。
You expect the vapor pressure to go down.
可以预计蒸汽压会下降。
We know there's vapor pressure there, right?
我们知道这里有蒸汽压？
And it's got a certain vapor pressure on top.
在上面施加特定的气压。
195torr The vapor pressure is 25.195 torr at 27 degrees C.
在27摄氏度时，蒸汽压为25。
But the water is, vapor pressure is, very slow, very small.
但是水的蒸汽压很小。
It's the usual, it's pretty close to the usual vapor pressure.
这很正常，水的蒸汽压非常接近通常的蒸汽压。
There's hardly any vapor pressure above your ice water glass.
冰水混合物上方,水蒸气的气压非常小。
Then I want to ask the question, what is the vapor pressure of the water?
现在我想问的是，水的蒸汽压是多少？
Once the cold water enters the flack, the vapor pressure falls quickly.
一旦冷水进入长颈瓶，水气压就迅速下降。
Where you measure the pressure, the vapor pressure, as a function of temperature.
在实验中你可以测量蒸汽压，作为温度的函数。
The liquid is pushed from the cylinder by the vapor pressure of the product.
产品的蒸气压把液体推出钢瓶。
That the vapor pressure of the solute is related to the mole fraction in the solution.
溶质的蒸汽压，和溶液中溶质的摩尔分数成正比。
Obviously there's going to be a little bit of vapor pressure, even at room temperature.
很显然肯定,会有蒸汽压存在，即使是在室温下。
A salt in water solution will have a lower vapor pressure than a solution of pure water.
盐水的蒸汽压，比纯水的蒸汽压小。
Meaning that the Henry's law constant is greater than the vapor pressure of the pure CS2.
意味着亨利定律常数，比纯cs2的蒸汽压大。
The pressure, the vapor pressure, of the water is going to be lower when the sugar is there.
当存在糖的情况下，水的蒸汽压会下降。
White vapor pressure factory has been adjusted, such as pressure changes do not adjust.
蒸发压力出厂时已调节好，如压力无变化请勿调整。
And water vapor pressure is lower when the air is cooler, meaning sweat evaporates faster.
凉快时水蒸发压低，这意味着汗水能很快蒸发。
It's going to come from the vapor pressure lowering not from the osmotic pressure, which we'll do next.
我们可以从蒸汽压得变化，而不是渗透压，得到这个结果。
In other words, the vapor pressure over pure liquid a is higher than the vapor pressure over pure liquid B.
换句话说，液体A上的蒸汽压，比液体B上的蒸汽压大。
And room temperature, it turns out if it's not volatile at all, if the vapor pressure is very, really tiny.
在室温下，结果是RDX根本不挥发，所以蒸汽压很小。
And then the vapor pressure of both substances above gets lowered. Anybody want to guess why they got lowered?
两种物质的蒸汽压都会下降，有人猜一猜为什么二者的蒸汽压都会下降吗？
Which is the vapor pressure of the pure material times the, and the composition of the liquid phase, Raoult's law.
这个常数是纯物质的蒸汽压，乘以液相的组分，Raoult定律。
And we found that the gas-liquid coexistence point, the vapor pressure of the water, was less than if it were pure.
我们发现在汽液共存点，糖水中水的蒸汽压，小于纯水的蒸汽压。
So, that means that the vapor pressure above the solution is lowered. So I should have said vapor pressure lowering.
这就表示溶液上的，蒸汽压下降，所以这就是刚才说的饱和蒸汽压下降。
A simple theory for void formation in the thermoset composite materials is presented to volatile vapor pressure.
热固性树脂基复合材料固化成型过程中产生孔隙的最简单机理是与挥发物的蒸气压相关联的。
A simple theory for void formation in the thermoset composite materials is presented to volatile vapor pressure.
热固性树脂基复合材料固化成型过程中产生孔隙的最简单机理是与挥发物的蒸气压相关联的。
应用推荐