关键词:OHNIDrdx6JbjXlXlFSsrTAFcYzMt4q+fzhaiWhamEmE=三周期极小曲面ioylPnRTmwH2rXofmXfyUxYHfZcwV8oWBVlWdjCYjdE=;梯度多孔支架;力学性能;渗透性