活塞在蒸汽压力下运动。
盐水的蒸汽压，比纯水的蒸汽压小。
A salt in water solution will have a lower vapor pressure than a solution of pure water.
在27摄氏度时，蒸汽压为25。
当存在糖的情况下，水的蒸汽压会下降。
The pressure, the vapor pressure, of the water is going to be lower when the sugar is there.
蒸汽压缩之后反应堆系统的压力就会降低。
The steam then condenses and reduces pressure in the reactor system.
我先考虑总压强，等于水的蒸汽压的情况。
I'm going to have the total pressure is going to be the partial pressure of the water.
蒸汽压路机把砾石路基压平后浇灌了混凝土。
The steam-roller levelled out the gravel roadbed and then the concrete was poured.
意味着亨利定律常数，比纯cs2的蒸汽压大。
Meaning that the Henry's law constant is greater than the vapor pressure of the pure CS2.
溶质的蒸汽压，和溶液中溶质的摩尔分数成正比。
That the vapor pressure of the solute is related to the mole fraction in the solution.
很显然肯定,会有蒸汽压存在，即使是在室温下。
Obviously there's going to be a little bit of vapor pressure, even at room temperature.
换句话说，液体A上的蒸汽压，比液体B上的蒸汽压大。
In other words, the vapor pressure over pure liquid a is higher than the vapor pressure over pure liquid B.
在室温下，结果是RDX根本不挥发，所以蒸汽压很小。
And room temperature, it turns out if it's not volatile at all, if the vapor pressure is very, really tiny.
我们可以从蒸汽压得变化，而不是渗透压，得到这个结果。
It's going to come from the vapor pressure lowering not from the osmotic pressure, which we'll do next.
参数由拟合蒸汽压、密度和离子平均活度系数数据获得。
Parameters are fitted to vapor pressure, density and mean ionic activity coefficient data.
内圈迭代采用校正克拉珀龙饱和蒸汽压方程计算平衡常数。
In the internal iteration, author used the adjusted Clausius-Clapeyron satur-vapor pressure equation to calculate the equilibrium coefficient.
同时测定了上述流体在高温下的蒸汽压和饱和汽液相密度。
Vapor pressures, saturated vapor and liquid densities for above fluids were measured at high temperatures.
我们来画相图，蒸汽压下降，意味着凝固点降低，和沸点降低。
And we also drew a phase diagram to show how this vapor pressure lowering was going to imply freezing point depression and boiling point depression.
谷物加工主要有干碾压、蒸汽碾压和蒸汽压片处理三种方法。
There are three corn process methods, such as dry rolling, steam rolling and steam flaking.
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。
And we found that the gas-liquid coexistence point, the vapor pressure of the water, was less than if it were pure.
这个常数是纯物质的蒸汽压，乘以液相的组分，Raoult定律。
Which is the vapor pressure of the pure material times the, and the composition of the liquid phase, Raoult's law.
用试验方法研究了该加热器在低进汽压力下的引射性能和加热性能。
Ejecting and heating performance of the heater at low steam pressure was studied through the experimental method.
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。
So, that means that the vapor pressure above the solution is lowered. So I should have said vapor pressure lowering.
蒸馏的一般目的，是分离在任何给定温度下具有不同蒸汽压的诸物质。
The general objective of distillation is the separation of substances that have different vapor pressures at any given temperature .
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？
And then the vapor pressure of both substances above gets lowered. Anybody want to guess why they got lowered?
即不同海拔高程处的大气压力和高于20摄氏度水温时的饱和蒸汽压力。
That is different from the elevation above sea level atmospheric pressure and water temperature at 20 degrees centigrade higher than the saturation vapor pressure.
由同时拟合蒸汽压、汽相体积和液相体积确定的三个参数都是温度的函数。
These three parameters, determined by fitting vapour pressure, vapour volume and liquid volume, are all function of temperature.
通过分析混燃锅炉燃烧系统的三大目标，重点分析了其中的主蒸汽压力控制。
Through analyzing three targets of multifuel fired boiler burning system, we emphatically analyzed the control of main steam pressure.
所以你需要很大的压强，或者说大量的惰性气体,才能使蒸汽压发生很小的改变。
So it takes a lot of pressure on top, a lot of extra inert gas to really make much of a difference.
看看自己是否能够想出来结果，这个问题的所有数值都有了，有纯溶质的蒸汽压。
See if you can figure out, given all the numbers that are in this problem here, you know what, the pure pressure on the solvent is.
看看自己是否能够想出来结果，这个问题的所有数值都有了，有纯溶质的蒸汽压。
See if you can figure out, given all the numbers that are in this problem here, you know what, the pure pressure on the solvent is.
应用推荐