Well, how about negative 273 degrees, 'cause that's the temperature at which entropy reaches its minimum value.

大概有零下273度（绝对零度）热力学函数因为那是熵达到其最小值时的温度。

That is equivalent to finding the minimum value of the function, a task that mathematically inclined readers may remember from school.

这就好比找方程的最小值，数学好的读者可能会回想起自己上学时做的题。

Well, when a current alternates quickly, it's changing back and forth between maximum and minimum values, known as peak current.

好吧，当电流快速交替时，它会在最大值和最小值之间来回变化，称为峰值电流。

Similarly, the minimum value of sine theta is 0, when theta is 0 – so that means the current is parallel to the magnetic field lines.

同样，当 theta 为 0 时，正弦 theta 的最小值为 0，这意味着电流平行于磁力线。