The amateur astronomer must consult the exposure meter and not rely on his senses . 业余天文学家必须参照曝光表而不能光靠感觉。
2.
Exposure table for magnification photography enlarge 放大摄影曝光表放大
3.
Let ' s have a look at the exposure meter 我们来查一下曝光表。
4.
Specification for direct reading pocket type electroscope exposure meters 直读袖珍式验电器曝光表规范
5.
Photoelectric exposure meters ; automatic controls of exposure in cameras 光电曝光表.照相机曝光的自动控制
6.
Bases for gm counter tubes - interrelationship of quartz - fiber electrometer type exposure meters and companion exposure meter chargers 盖革-米勒计数管的管座.石英纤维静电计式曝光表和相似曝光表的相互关系
