Based on the theory of the photographic process and H-D curve,this paper analyses and studies the methods of improving the image quality of the dark zone in negative-positive system by increasing the exposure value combined with the enhancement of the development and printing processes;results were proved by running practical shooting work.
本文从摄影过程理论出发,以感光材料的感光特性曲线为工具对"负—正"系统中采取前期增加曝光量并和后期洗印工艺相结合来改善画面暗部影像质量的方法进行了分析和研究,并进行了相应的实拍验证。
Wanjin A,derived from crossing Indonesian Paddy type CMS line You I A with the selected plants from Bo B∥Jin 23B/Australian Kangaroo Zhan and backcrossing successively,is an indica CMS line with the characteristic of weak sensitivity to photoperiod induced by gene interaction.
万金A是广东海洋大学农业生物技术研究所以印尼水田谷型不育系优IA为母本,用博B∥金23B澳/洲袋鼠占后代中优良单株为父本杂交,并连续回交转育而成的具有互作型弱感光特性的籼稻不育系。
Effects of short day length treatment on major traits of photosensitive hybrid rice combination;
短日处理对感光型杂交稻组合性状的影响
This article introduces the characteristics, application, usage and key points needing attention in production of the multipurpose Liquid photosensitive ink.
介绍了多功能液态感光油墨的性能、应用、使用方法及注意事项,同时对使用中的常见问题及解决办法进行了详细说明。