background light

• 背景光

background light的用法和样例：

例句

1. The amplitude of the signal was modulated in our system and thelow frequency background noise isolated by an electrical filter.
   本系统采用振幅调变的方式来作讯号的调变，并经由滤波器来有效隔绝一般低频背景光的环境干扰。