以重庆工学院图书馆工程建设为背景，设计了一种背景音乐广播系统。

A background music broadcast system of library building engineering in Chongqing Institute of Technology is designed.

youdao

以重庆工学院图书馆工程建设为背景，设计了一种背景音乐广播系统。

A background music broadcast system of library building engineering in Chongqing Institute of Technology is designed.

youdao