背景噪聲級(jí)backgroundpartition: 后臺(tái)區(qū)backgroundnoisee: 環(huán)境音backgroundplate: 背景板(燈示號(hào)志)backgroundmassspectrum: 本底質(zhì)譜圖backgroundprogram: 后臺(tái)程序下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
