preselector 中文意思是什麼
preselector
解釋
預選機-
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
課題採用電調選頻和多次混頻的方案基本實現了大動態寬頻帶接收，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新與獨到之處。 -
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。
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