短語(yǔ)詞組短語(yǔ)signal -level cancellation 符號(hào)干擾抵消minimum -signal level 最低信號(hào)電平;最小訊號(hào)位英語(yǔ)peak -signal level 信號(hào)峰值電平standard input -signal level 標(biāo)準(zhǔn)輸入信號(hào)電平receiver threshold -signal level 接收機(jī)門限電平average picture -signal level 平均圖像信號(hào)電平mic -level signal 麥克風(fēng)電路信號(hào)low -level signal 翻譯;低階信號(hào) 返回 signal level