特性曲線族 charactereistic family; characteristic family; family of characteristic curves; family of characteristics
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千萬人都在用的超大詞匯詞典翻譯APP
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This paper analyzes the amplitude frequency characteristics of picture intermadite frequency amplify circuit of colour television , analyzes the influence of picture quality and sound quality for intermadiate frequency amplify circuit amplitude frequency characteristics , puts forward the method of reduce influence and improve picture and sound quality 摘要詳細(xì)分析了彩電圖像中放電路幅頻特性曲線,分析中放幅頻特性對圖像質(zhì)量、伴音質(zhì)量的影響,提出了減少影響提高圖像、伴音質(zhì)量的方法。
The traditional analog frequency - sweeping instrument , which mostly uses the lc circuit as the frequency oscillator , is more expensive , too much bigger and heavy to carry . it can only display the curve of amplitude - frequency , but ca n ' t used to measure the phase - frequency , and ca n ' t used to print the curve of frequency response characteristic either . it brings many discommodity to the user 傳統(tǒng)的模擬式掃頻儀大多是用lc電路構(gòu)成掃頻振蕩器,它不僅價格昂貴,體積龐大,而且只能顯示幅頻特性曲線,不能得到相頻特性曲線,更不能打印被測網(wǎng)絡(luò)的頻響曲線,給使用者帶來諸多不便。