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透射式投影器.投影台尺寸
Overhead projectors.Projection stages dimensions
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幻灯片 尺寸
Projector slides.Dimensions
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摄影用电子闪光装置安全要求
Safety requirements for electronic flash apparatus for photographic purposes
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彩色冲洗设备安全保护要求
Requisitions of safety and protection for color printer and processor
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数码照相机分辨率的测量
Digital still cameras.Besolution weasurements
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照相机 第1部分;民用小型照相机
Camera.Part 1:Civil miniature camera
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照相机快门
Camera shutters
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数码照相机曝光指数、ISO感光度值、标准输出灵敏度和推荐曝光指数的确定
Determination of exposure index, ISO speed ratings, standard output sensitivity and recommended exposure index for digital still cameras
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透射式投影器.性能特性测定方法
Overhead projectors.Methods for measuring performance characteristics
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照相机操作力和强度
Operating force and strength of camera
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