This technique has highly practical value and has been applied to the AC-AC frequency conversion display system.

该技术具有较高的实用性并已经用于交交变频显示系统中。

youdao

This technique has highly practical value and has been applied to the AC-AC frequency conversion display system.

该技术具有较高的实用性并已经用于交交变频显示系统中。

youdao