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ORIGINAL DRAWING RECORDING BODY FOR BOTH PROJECTION AND COPYING PURPOSES
ORIGINAL DRAWING RECORDING BODY FOR BOTH PROJECTION AND COPYING PURPOSES
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机译:用于投影和复印的原始绘图记录主体
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摘要
PURPOSE:To manufacture a clear and distinct drawing image free from the background soil which can be used as the second drawing image for both projection and diazo copying purposes by contacting a transparent support body tightly with one face of semi-electroconductive film via transparent electroconductive layer.
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