to set the controls of a piece of electrical equipment so that it will start to work at a particular time预调;预置;给…预定时间
preset something to do somethingYou can preset the radiators to come on when you need them to.你可以预先调好暖气,使它在你需要的时候启动。
preset somethingto preset TV channels/radio stations (= to set the controls so that particular channels are selected when you press particular buttons)预调电视频道/广播电台
[usually passive]preset somethingto decide something in advance预先决定;事先安排