VERB
預先設置，預調（設備）
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...
可以預設各種程序的電腦定時器
Bake the cake in a preset oven.
在預先設置好的烤箱中烤蛋糕