1. 本底信号：background seismic wave 本底地震波 | background signal 本底信号 | background source 本底源
2. (质谱检漏仪的)背景信号：Background gas背景气体 | Background signal (质谱检漏仪的)背景信号 | Backing pressure前级压强、背压
3. 本底信号;背景信号：逆向反应 background reaction | 本底信号;背景信号 background signal | 支承板;底板 backing plate
noun
1. extraneous signals that can be confused with the phenomenon to be observed or measured
e.g. they got a bad connection and could hardly hear one another over the background signals
Synonym: background