How to import the transform getted from slicer for vtk?

I registrated two model in slicer and get the transform but it is not the same with VTK.(The promblem may be “different coordinate system” )
I searched the forum to deal with it by python code(get the slicer’s transformcould be import in vtk) but get nothing.
And another problem: can I set the same coordinate system between VKT and slicer?
The different results:

The Transforms module developer documentation should answer all your questions:

If anything is not clear then let us know.