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。

麻省理工公开课 - 热力学与动力学课程节选

So at this point the temperature will change.

在这点温度会改变。

麻省理工公开课 - 热力学与动力学课程节选

And the triple point of water is 16K that temperature and pressure - there's a unique temperature and pressure where water exists in equilibrium between the liquid phase, the vapor phase, and the solid phase.

与水的三相点,我们定义它为273。,水的三相点,是一个特定的温度和压强,可以使水的液态，气态和固态三相共同达到平衡，三相点是液态。

麻省理工公开课 - 热力学与动力学课程节选

And so the slope of this thing is f at the triple point, which is this point here, this is the temperature of the triple point of water, f divided by 273.16. That's the slope of that line.

除以x轴的坐标,这就是斜率，而直线,经过原点，因此斜率乘上T就得到。

麻省理工公开课 - 热力学与动力学课程节选