At the same time the use of digital control LED and LCD LCD dynamic display "when", "sub", "second" modern timing devices.

同时采用数码管led和LCD液晶显示器动态显示“时”，“分”，“秒”的现代计时装置。

youdao

At the same time the use of digital control LED and LCD LCD dynamic display "when", "sub", "second" modern timing devices.

同时采用数码管led和LCD液晶显示器动态显示“时”，“分”，“秒”的现代计时装置。

youdao