请问Dx9中,函数D3DXMatrixTransformation中的公式问题

Asura

在Dx9中，函数D3DXMatrixTransformation用下面的公式，得出最后的结果：
    Mout = (Msc)-1 * (Msr)-1 * Ms * Msr * Msc * (Mrc)-1 * Mr * Mrc * Mt
where:
    Mout = output matrix (pOut)
    Msc = scaling center matrix (pScalingCenter)
    Msr = scaling rotation matrix (pScalingRotation)
    Ms = scaling matrix (pScaling)
    Mrc = center of rotation matrix (pRotationCenter)
    Mr = rotation matrix (pRotation)
    Mt = translation matrix (pTranslation)
请大侠们，给解释一下。小弟看的糊涂.
    (Msc)-1,(Msr)-1,(Mrc)-1是相应的的Inverse Matrix吗？ [em24]