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照相机用电子闪光装置与同步线的连接件型式及尺寸
Types and dimensions for connectors of electronic photoflash equipment to synchro-cord
价格：￥0.00
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照相机用电子闪光装置闪光指数的确定
Determination of flash guide numbers for electronic photoflash equipment
价格：￥0.00
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照相机焦平面曝光量的光电测量方法
Photoelectric method for measuring exposure in focal planes of camera
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照明用电子闪光装置技术条件
Specifications of electronic flash equipments for photograph
价格：￥0.00
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