preselector中文是什么意思

發(fā)音:

中文翻譯
造句

預選機
預選器, 預選程序
預選器，預選裝置
預選器；高頻預先濾波器
預選裝置

first preselector 第一級頂選機
preselector control 預定位控制; 預選控制
preselector filter 前級選頻濾波器
preselector gearbox 預選式變速箱; 預選式齒輪變速器
preselector mechanism 預定位控制機構
preselector of information 信息預選器
preselector relay 預選器繼電路
preselector stage 預選級
preselector valve 預選閥; 預學
relay preselector 中繼預選器
rf preselector 射頻預選器
second preselector 第二預選器
stepping preselector 步進式預選器
f-f cavity preselector 射頻空腔預選器
preselector iris system 預調彩虹光欄系統(tǒng)
radio-frequency cavity preselector 射頻空腔預選器
preselective gearbox 預選式變速器
preselective control 預選操縱
preselective adj. (汽車齒輪)預選式的。

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例句與用法

Other features include : preselector time control for auto cycling ; roll slide positive stop ; and automatic lubrication
其他功能包括：自動旋轉時間預選控制，輥子滑動前擋板，以及自動潤滑。
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
課題采用電調選頻和多次混頻的方案基本實現了大動態(tài)寬頻帶接收，該方案無論是方案本身還是方案中所涉及到的技術都具有一定的創(chuàng)新與獨到之處。

百科解釋

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.

詳細百科解釋