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照相机附件插座及插座芯
Camera accessory shoes and feet
价格:¥0.00
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单机宽银幕偏光立体电影放映偏转镜技术条件
Polarizer for single projector wide screen polarized 3-D motion picture projection-specification
价格:¥0.00
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幻灯机 技术条件
Technical specification of slide projectors and filmstrip projectors
价格:¥0.00
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影室照相用大型电子闪光灯
Large electronic flasher for photographic purposes in studio
价格:¥0.00
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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
价格:¥0.00
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人像镜头
Portrait lenses
价格:¥0.00
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数码照相机
Digital camera
价格:¥0.00
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