缩微胶片阅读器 meaning in English

film readers
microfilm reader
reader for microfilm

Micrographics - readers for transparent microforms - performance characteristics
缩微摄影技术.透明缩微胶片阅读器.性能特征
Micrographics - readers for transparent microforms - measurement of characteristics
缩微摄影技术.透明缩微胶片阅读器.特性测量
Microfilm technics ; microfilm readers ; requirements for rear projection microfilm readers
缩微胶卷技术.缩微胶片阅读器.背面放映的缩微胶片阅