un. 节目信号电平;程序级 [网络] 层次可分为规划 program level: 程序级; 程序位准; 节目位准; 节目信号电平instruction level program: 指令级程序l peak program level: 峰值音量电平object level program: 目标级程序peak program level: 峰值音量电平下载手机词典可随时随地查词查翻译