例句與造句

1. These include cameras for fast photography, photoelectric photometers, a single-channel photoelectric spectrum scanner, a medium resolution spectrograph, a quartz-prism calibration spectrograph, infrared photometer, image tube spectrograph, a Universal Astronomical Grating Spectrograph ( UAGS from Zeiss ), high-resolution echelle spectrograph and a polarimeter.
2. It's difficult to find infrared photometer in a sentence. 用infrared photometer造句挺難的