[{"title":"( 2 个子文件 21.73MB ) STM32F4XX参考手册.7z","children":[{"title":"STM32F4xx英文参考手册.pdf <span style='color:#111;'> 23.08MB </span>","children":null,"spread":false},{"title":"STM32F4xx中文参考手册.pdf <span style='color:#111;'> 20.60MB </span>","children":null,"spread":false}],"spread":true}]