What is the difference rotation way?

hi guys, I got project and proceed by using maya and ue4.

maya bone rotation like if y is changed(assum that y is right/left) , then x z changed.
but ue4 bone rotation like if y is changed(assum that y is right/left), then x z not changed.

I wondering that what is the difference rotation way in ue4?

I think that every 3D Tool is the same way! but ue4 is different.

If know that, please note!

and how I change the rotation way? like maya