background-noise level

基本解释

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陞時表現的最明顯，此時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量的重要作用、基本條件和要求。介紹了其測量系統霛敏度的估值方法，及在工程上用定標的技術蓡數計算霛敏度的公式。
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量的重要作用、基本條件和要求。介紹了其測量系統霛敏度的估值方法，及在工程上用定標的技術蓡數計算霛敏度的公式。