So our usual phase diagram here with temperature on this axis here and pressure on this axis here, and we've got our triple point sitting here.

我们通常的相图是这样，这个轴是温度轴，这个轴是压强轴，这里是三相点。

youdao

It's a very common thing to get, the triple point from this.

从这里得到三相点是非常常见的。

youdao

Then if I change to the triple point, where the number of phases is three, then the number of degrees of freedom 2 is one minus three is minus two, two plus two is zero.

如果考虑三相点，这里有三个相，那么自由度的数目，为1减去3得负，再加上2等于零。

youdao

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 the triple point is liquid solid, gas, all in equilibrium.

气态，固态，三相平衡,你可能会想。

麻省理工公开课 - 热力学与动力学课程节选

So the partial pressure or the pressure by which you have this triple point, happens to be 6.1 times 10 to the minus 3 bar.

而要小得多,事实上，水的三相点时的压强是6。1毫巴。

麻省理工公开课 - 热力学与动力学课程节选

In that time, the Dow has avoided a triple-digit point decline for 36 consecutive days.

WSJ: Dow Touches 13000 but Can't Hold On

The Dow Jones Industrial Average suffered its third consecutive triple-digit point decline, and Treasury yields fell to a record low as investors digested evidence that Europe's mounting crisis is hitting the bottom lines of U.S. corporations.

WSJ: Dow Marks Third Triple-Digit Loss in a Row

The advance of Wednesday, Thursday and Friday marked the Dow's biggest three-day point gain this year and wiped out two triple-digit drops on Monday and Tuesday, leaving the Dow up 2% for the week and its highest close since May 3.

WSJ: Dow Closes Above 13000; First Time Since May 7