气球驾驶员约翰·斯坦纳在宾夕法尼亚州伊利为自己的热气球充气。 图为最古老的飞行器照片，摄于1857年，采用的是四分之一感光底片旧式照相法。
Aeronaut John Steiner inflates his hot air balloon at Erie, Pennsylvania, as seen in the oldest known photograph of an aircraft, a quarter-plate ambrotype taken in June 1857.
采用天然气热氯化法生产二氯甲烷以供感光材料工业作溶剂。
Use of natural gas for heat chlorination methylene chloride for the production of photographic materials for industrial solvent.
是一种天然蛋白质，可溶于水，在蛋白中最为常见。这种胶质在照相制版法里用以作重铬酸盐感光剂。
Natural protein, soluble in water and most commonly found in the Albumins, the colloid used for certain dichromated sensitizes employed in photomechanical process.
针对印刷中砂目和感光层的磨损，采用因子设计法设计实验，保证了实验的准确性。
For the PS plate grain and light-sensitive coating abrasion, an experiment was designed based on factor design, which ensures the veracity of experiments.
该方法包括：将需要的图纹通过激光全息术记录到感光板上，制得具有全息图纹 的光学掩模板；
The method comprises the following steps: recording a required pattern onto a photographic plate through laser holography and manufacturing an optical mask plate with the holographic pattern;
方法应用改良的准分子激光切削法和酶分层消化法来分离纯化视网膜感光细胞层。
MethodsModified excimer laser surgery, regular excimer laser surgery, and enzyme gradation digestion were used to isolate retinal photoreceptors.
方法应用改良的准分子激光切削法和酶分层消化法来分离纯化视网膜感光细胞层。
MethodsModified excimer laser surgery, regular excimer laser surgery, and enzyme gradation digestion were used to isolate retinal photoreceptors.
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