单词	对焦螺旋
释义	同调焦螺旋--对焦螺旋
随便看	double-bass double-bass clarinet double basses double bassist double bassoon double bass sackbut double-bass saxhorn double-bass trombone double-bass tuba double bass viol double bath dyeing double batten double baudot system double(-beam) double-beam doublebeam double-beam atomic absorption spectrometer double beam balance double-beam cathode-ray tube double-beam densitometer double beamer double-beam infrared spectrophotometer double-beam instrument double-beam mass spectrometer double beam optical-null infrared spectrometer