单词	先敎
释义	同Foretaught
随便看	optical dye optical dynamometer optical effect optical effects optical efficiency optical electron optical/electronic optical/electronic{=o/e} optical electronic reproducer optical electronics optical element optical emission optical emission spectrograph optical-emission spectrometer optical emission spectrometry optical emission spectroscopy optical emitter optical empty optical enantiomorph optical encoder optical encoder / decoder optical end-finish optical energy optical energy density optical energy gap measurement