what does 'time triggers' mean in english test?its a clue in a qu_英语解答

what does 'time triggers' mean in english test?
its a clue in a question.

人气：127 ℃　时间：2019-10-27 07:04:59

解答

一种订单类型
Time Triggers
>Specify a time for your limit and market orders to go live.
指定下单时间和下单价格.