VERB
预先设置，预调（设备）
If a piece of equipment is preset, its controls have been set in advance of the time you want it to work.
例句
...a computerised timer that can be preset to a variety of programs...
可以预设各种程序的电脑定时器
Bake the cake in a preset oven.
在预先设置好的烤箱中烤蛋糕