显微密度计光学 optics of microdensitometry

光学显微密度计 optical microdensitometer

调制射束显微密度计 [光] modulated beam microdensitometer

显微密度计测定线 microdensitometer tracing

显微光密度计 [光] microdensitometer

扫描透射显微密度计 scanning transmission microdensitometer

显微光学密度计 microphotodensitometer

微显像密度计 microdensitometry

飞点扫描显微光密度计 flying-spot microdensitometer ; spot microdensitometer