Exposure regulating device
作者： Wick Richard , Biedermann Friedrich
DOI:
关键词:
摘要:
lens.org 参考文章(3)
Aiken W Fisher, William B Warren, Photoelectric apparatus for spectrographic analysis ,(1944)
Weinberger Joseph M, Harry Fleisher, Light measuring device ,(1940)
Jaffe Emanuel M, Galaw Edmund S, Photographic printing apparatus ,(1954)