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幻灯机画面区温升玻璃夹层幻灯试验片测试方法
Slide projector-Determination of temperature rise in the picture area using a glass sandwich test slide
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摄影用大型电子闪光装置
Large-scale electronic flash apparatus for photographic purposes
价格：￥18.00
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照相镜头 第1部分;变焦距镜头
Camera lens--Part 1: Zoom lens
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应用电视摄像机云台通用技术条件
General specification of pan/tilt head for NBTV camera
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65mm和70mm电影摄影机片窗所形成的影像和70mm电影拷贝最大可放映画面的位置和尺寸
Image area produced by 65mm and 70mm motion-picture camera aperture and maximum projectable image on 70mm motion-picture prints--Positions and dimensions
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热释电电视摄像机测量方法
Methods of measurement for pyroelectric television cameras
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热释电电视摄像机总技术条件
Generic specification for pyroelectric television cameras
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视频投影器通用技术条件
General technical specifications of video projectors
价格：￥0.00
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缩微摄影技术 检查平台式缩微摄影机系统性能用的测试标板
价格：￥0.00
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