单词	回波模态
释义	回波模态echo mode
随便看	filament cathode filament circuit filament-continuity tester filament control filament count filament cross-section shape filament crystal filament current filament dart fish filament denier filament-- discharge filament display device filament drawing filamented grenadier filamented pahoehoe filament emission filament entanglement filament fabric filamentfilter cloth filament from a cocoon filament guide filamentiferous rod filamentization filament lamp filament linear-density