preselector中文是什么意思

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中文翻译
造句

预选机
预选器, 预选程序
预选器，预选装置
预选器；高频预先滤波器
预选装置

first preselector 第一级顶选机
preselector control 预定位控制; 预选控制
preselector filter 前级选频滤波器
preselector gearbox 预选式变速箱; 预选式齿轮变速器
preselector mechanism 预定位控制机构
preselector of information 信息预选器
preselector relay 预选器继电路
preselector stage 预选级
preselector valve 预选阀; 预学
relay preselector 中继预选器
rf preselector 射频预选器
second preselector 第二预选器
stepping preselector 步进式预选器
f-f cavity preselector 射频空腔预选器
preselector iris system 预调彩虹光栏系统
radio-frequency cavity preselector 射频空腔预选器
preselective gearbox 预选式变速器
preselective control 预选操纵
preselective adj. (汽车齿轮)预选式的。

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例句与用法

Other features include : preselector time control for auto cycling ; roll slide positive stop ; and automatic lubrication
其他功能包括：自动旋转时间预选控制，辊子滑动前挡板，以及自动润滑。
By means of using the electronically tuned preselector and multiple conversion technology , a wide band receiver with wide dynamic range is basically achieved . the scheme is innovative and original not only in the scheme itself but also in the technology of some sub - circuits
课题采用电调选频和多次混频的方案基本实现了大动态宽频带接收，该方案无论是方案本身还是方案中所涉及到的技术都具有一定的创新与独到之处。

百科解释

A preselector is a radio technological term for an electronic device that is inserted between the antenna and the receiver, limiting the range of frequencies that can be applied to it. Tuning to the desired frequency keeps the preselector's narrow bandwidth centered at the operating frequency, rejecting or reducing out-of-band unwanted interference signals.

详细百科解释