本发明制备方法简单，成本低廉，可以一次性制备需要的功能梯度热电 材料；
The preparation method of the invention is simple, has low cost and can prepare the required functional grade thermoelectric material by one step;
本发明制备方法简单，成本低廉，可以一次性制备需要的功能梯度热电 材料；
The preparation method of the invention is simple, has low cost and can prepare the required functional grade thermoelectric material by one step;
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