求翻译：可看出Cu的自扩散系数小，但在靠近界面的扩散区还是有一定量的分布，显然是在基体中形成Mg-Cu金属间化合物的结果。沿着向钛一侧的方向，可以发现Mg、Cu、Al三种元素波动规律较为相似，出现波峰与波谷的位置较为接近。是什么意思？

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As can be seen from the CU diffusivity small but close to the area or the proliferation of interface with a certain amount of distribution, apparently in the substrate to form a metal compounds Mg-cu results. Along the side of titanium, you can find the mg, cu, al three elements is much like the law

May see Cu to be small from the diffusion coefficient, but has the ration distribution in the nearness contact surface proliferation area, obviously is forms the Mg-Cu intermetallic compound in the substrate the result.Along to the titanium one side direction, may discover Mg, Cu, the Al three kind

Can see the self-diffusion coefficient of Cu, but close to the diffusion area or a certain amount of distribution, apparently is the result of Mg-Cu intermetallic compounds formed in the matrix. Along the direction of titanium side, Mg, Cu, Al three elements can be found the variation were similar,

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