If several of these conditions are present at the same time, a person's body temperature may rise above safe levels.
VOA: special.2010.07.27
And if you go back into the 1800's when thermodynamics was starting, there were a zillion different temperatures scales Everybody had their own favorite temperature scale The one that we're most familiar with is the centigrade or Celsius scale where mercury was the substance, and the volume of mercury is the property.
如果你回头看看19世纪温度计,刚开始使用的时候,那时有不计其数的不同温标,每个人都有他们自己最喜欢的温标,我们最熟悉的是,摄氏温标,用水银,作为工作物质,水银的体积是所用的性质。
It's going to have some volume, temperature to begin with, and then we're going to do something to it.
气体有一定的,体积与温度,现在我们。
Doctors say tissues and organs begin to cook when the body's temperature is higher than forty-two degrees Celsius.
VOA: special.2010.07.27
- And now temperature in Fahrenheit -- 212 all right, let's go ahead and pick an easy one like 212, Enter, and indeed equals 100 in Celsius.
现在输入华氏温度-,好的,让我们选一个简单的,像,回车,确实等于100摄氏度。
The report says that, at maximum activity, the small increase in sunshine over several years causes a small temperature increase in Earth's atmosphere.
VOA: special.2009.09.29
Because that's the temperature at which many of the molecules in our bodies operate at their most efficient, and enzymes is the best example of that.
因为在正常体温下,体内许多分子活性最高,酶就是其中最好的例子
Eating snow might be fun but it lowers the body's temperature.
VOA: special.2009.12.23
6 It's got a density of about 1.76 at room temperature.
在室温下密度是1。
They cause the person's body temperature to rise.
VOA: special.2009.05.26
And the path that I'm describing then, let's assume that we're raising the temperature up is this path right here.
经过一个,等压过程,路径就是这样。
The body's temperature increases and perspiration fails.
VOA: special.2010.07.27
So this unique temperature and unique pressure defines a triple point everywhere, and that's a great reference point.
这样,无论在何处,三相点都具有相同的温度和压强,十分适合来作参考点。
One important factor affecting the water quality is the area's temperature and rainfall, and Hunt's model is set up for the mid-Atlantic region of the United States.
VOA: standard.2010.08.04
And the equation of state, pressure versus volume at constant temperature, is going to have some form, let's just draw it in there like that.
系统的态函数,恒温下压强比体积,变化曲线,就像这样。
"It was a very simple wooden table with a fitted bulb that would adjust based on the baby's temperature, and had it constructed and implemented in her hospital.
VOA: standard.2009.12.18
Hydrogen gas it's in its most stable state, right at room temperature and pressure.
和常压下氢气是氢元素,最稳定的状态,这个小“0“
It's usually a combination of temperature,even air flow.
VOA: standard.2010.05.05
RT2 So it's R T2, right, now we're at a lower temperature times log the log of V4 over V3.
等于,这时温度比刚才低,乘以。
"I was appalled. When you read through it it's sort of like it's a memo out of some science fiction movie - I mean, the temperature of the air can't be any lower than thus and so, you can't do it for any few minutes.
VOA: standard.2009.04.17
And it's not hard to see how the heat of reaction at room temperature can be related to they heat of reaction at other temperatures.
知道室温下的反应热,如何与其他温度下的反应,热联系起来这点并不困难。
The whole thing's going to come to some new equilibrium temperature between the products and the oil or whatever's around it, and we're going to measure that.
生成物和周围的油或,别的什么东西之间,达到某种新的平衡态,我们要测量的就是这个。
And then there's a cold reservoir T2 at some lower temperature T2.
另外有一个冷的热源,温度为。
Our temperature probably fluctuates during the day a little bit anyways, it's not very accurate. And similarly, the boiling point, defining that at a 100 degrees Celsius well that depends on the pressure.
这就不太精确,我们的体温一天之中,会有高低的变化,这一定义不够精确,类似的,我们把水的沸点定义为。
And then maybe I raise the temperature to whatever, room temperature, maybe 20 degrees hotter than room temperature. And I again say OK, now how much heat do I need to raise this thing's temperature by 1 degree?
我可能把温度升到,比如室温,或者比室温高20度之类,然后我再说,好,现在要把这个东西的温度,升高一度需要多少热量?
That'll be inside our calorimeter. It's insulated, and there's still a thermometer, so we can measure the temperature.
被放置在量热计里面,它是绝热的,同样有一个温度计,让我们可以测量温度。
If I'm working under conditions of constant temperature and volume, that's very useful.
如果在恒定的温度和体积下,进行一个过程,这是非常方便的。
What happened to the temperature in that expansion? It's an adiabatic expansion.
温度要,如何变化?
That's the property that's going to give us the change in temperature.
这就是能给我们,温标定义的物质特性。
dS/dV There's some variation, dS/dV, at constant temperature.
这里有一点变化,即恒定温度下的。
应用推荐