短語詞組短語recording demagnetization mechanism [物]記錄去磁機(jī)理speed recording mechanism 速度記錄裝置depth recording mechanism 深度記錄裝置roll recording mechanism 橫搖記錄裝置self -recording mechanism [自]自動(dòng)記錄機(jī)構(gòu) 返回 recording mechanism