duplicate film meaning in English

翻拍菲林
复印胶片
复制胶片

Micrographics - duplicating film , silver , diazo and vesicular - visual density - specifications and measurement
缩微摄影技术银盐重氮和微泡拷贝片视觉密度技术规范和测量
Micrographics - duplicating film , silver , diazo and vesicular - visual density - specifications and measurement
缩微摄影技术.银盐重氮和微泡复制胶片.视密度.规范和测量
Abstract : this paper outlines the normal and reversal imaging mechanism of dual positive - negative diazo duplicating film , the accurate choice of reversing agents , measures for increasing the image density and operation methods for dual exposure from film both sides to yield high density film . a new diazo duplicating film with satisfactory practical characteristics has been thus obtained
文摘:本文讨论了异同像混用重氮胶片的成像原理、反转成像机理及反转剂选择原则，提高图像密度的辅助措施、以及高密度胶片的双面曝光方法等技术问题，通过综合运用上述技术措施，研制成功了一种可满足实用要求的兼有异像和同像两种复制特性的重胶片新品种。