I'm trying to use GraphicsColumn to plot two curves with very different ranges. for example,

```
GraphicsColumn[{Plot[Sin[x], {x, 0, 10}, PlotRange -> All, 
   AspectRatio -> 0.3, Frame -> True, Axes -> False, 
   ImageMargins -> 20], 
  Plot[Cos[x], {x, 0, 10}, PlotRange -> All, AspectRatio -> 0.3, 
   Frame -> True, Axes -> False, ImageMargins -> 20]}, 
 Epilog -> {Text["Frequency", {Center, Bottom}], 
   Rotate[Text["Power", {0.5, Center}], 90 Degree]}]

```

But the x label is not displayed properly, i.e., it is cut by the edge of the graph. 

![enter image description here](https://i.stack.imgur.com/yAVbL.jpg)

How to improve it?