In this paper, we investigate the stability issue and large time behavior of three dimensional magnetohydrodynamic equations with velocity damping and magnetic diffusion only in the $ x_1 $-direction near a background magnetic field. Due to the lack of the magnetic diffusion in two direction, this problem becomes more challenging. The classical anisotropic Sobolev techniques to deal with MHD equations with mixed dissipation fail here. Fortunately, combining anisotropic Sobolev techniques and some interpolation methods, we can establish the asymptotic stability and explicit decay rates of the solutions to the three dimensional MHD equations mentioned above. The most difficult is to obtain the $ L^1 $-norm of $ \|\nabla_h u\|_{L^\infty} $ in time.
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