Does anything happen automatically at a preset time?

在预设的时间，有事情自动发生吗？

youdao

The releasing mechanism is a timer mechanism to release the payload after a preset time, or alternatively, is a wireless controlled mechanism.

该释放机构是在预先设置时间后释放载荷的计时器机构，或者可选地，是无线受控机构。

youdao

A transient cookie is like any other with the exception that it is destroyed once the user disconnects from the server or is inactive for some preset time.

瞬时cookie除在用户断开与服务器的连接时被破坏或在某一段预设的时间内不活动之外，与其它的cookie是一样的。

youdao

These give the owner of the option the right to buy the futures contract within a certain time frame at a preset price.

FORBES: Getting Into The Gold Market

Not only can it display your PS4 games in the Vita's native resolution (960x544), but it can be activated at any given time rather than having to be preset.

ENGADGET

Taking professional-looking images is made easy with 19 different integrated Smart Modes, which allow users to choose from a series of preset scenario options such as Light trace or Action freeze to ensure the perfect shot is captured every time.

ENGADGET: Samsung outs cheaper, WiFi-only Galaxy Camera