According to time or radiant exposure setting countdown timer, Arrow keys facilitate displayed program function and characteristics.
根据时间或辐射曝晒设置的倒数计时器；箭头键便于滚动显示程序功能与特征。
To FPGA development platform for the traffic signal system, with a countdown and the buzzer function.
以FPGA为开发平台的交通信号系统，带有倒计时和蜂鸣器功能。
The prototype has a countdown, and power failure alarm function. It produces oxygen stable with low noise, consistents with relevant national product standards.
该样机具有倒计时，断电报警等人性化功能，产氧稳定，噪音低，符合国家相关产品标准。
The function of clock display contains the displays of single time zone clocks and multi time zone clocks. The timer can realize functions of countdown and clock.
其中，时钟显示包含单时区时钟显示和多时区时钟显示，计时器可实现倒计时与正常计时。
The function of clock display contains the displays of single time zone clocks and multi time zone clocks. The timer can realize functions of countdown and clock.
其中，时钟显示包含单时区时钟显示和多时区时钟显示，计时器可实现倒计时与正常计时。
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