[{"title":"(2个子文件7.05MB)FPGA简易钢琴设计","children":[{"title":"基于FPGA的钢琴设计","children":[{"title":"搭载nios最终版.rar <span style='color:#111;'>98B</span>","children":null,"spread":false},{"title":"SOC报告.doc <span style='color:#111;'>7.26MB</span>","children":null,"spread":false}],"spread":true}],"spread":true}]