| 单词 |
preselector |
| 释义 |
preselector
preselector (ˌpriːsɪˈlɛktə) n (Telecommunications) a system that automatically connects a caller to a free lineTranslations
preselector
preselector[¦prē·si′lek·tər] (electricity) Device in automatic switching which performs its selecting operation before seizing an idle trunk. (electronics) A tuned radio-frequency amplifier stage used ahead of the frequency converter in a superheterodyne receiver to increase the selectivity and sensitivity of the receiver. |
| 随便看 |
- march 2, 2016
- march 2, 2017
- march 2, 2018
- march 2, 2019
- march 2, 2020
- march 2, 2021
- march 2, 2022
- march 2, 2023
- march 22, 2011
- march 22, 2012
- march 22, 2013
- march 22, 2014
- march 22, 2015
- march 22, 2016
- march 22, 2017
- march 22, 2018
- march 22, 2019
- march 22, 2020
- march 22, 2021
- march 22, 2022
- march 22, 2023
- march 22nd
- march 23
- march 23, 2011
- march 23, 2012
|