background-noise level

基本解釋

The impact is going to be most clearly noted when the background-noise level goes up, when you have to focus on what someone is saying.
這種聽力喪失的影響在背景噪音水平上升時(shí)表現(xiàn)的最明顯，此時(shí)你不得不集中注意力才能聽清楚某人的講話。
The paper discusses the importance of background-noise's level of decimeter wave-band on antenna and its basical technical condition and request.
論述了分米波段天線背景噪聲電平測(cè)量的重要作用、基本條件和要求。介紹了其測(cè)量系統(tǒng)靈敏度的估值方法，及在工程上用定標(biāo)的技術(shù)參數(shù)計(jì)算靈敏度的公式。
The paper discusses the importance of measuring background -noise's level of centimeter wave-band on antenna and its basical technical condition and request.
論述了厘米波段天線背景噪聲電平測(cè)量的重要作用、基本條件和要求。介紹了其測(cè)量系統(tǒng)靈敏度的估值方法，及在工程上用定標(biāo)的技術(shù)參數(shù)計(jì)算靈敏度的公式。