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灰雾密度
相关语句
  fog density
     In sensitometry, the sensitivity, contrast coefficient and fog density are generally deduced from characteristic curve graphically.
     在感光测定中,一般都用图解的方法从感光特性曲线上求出感光度、反差系数和灰雾密度等特性数值。
短句来源
  相似匹配句对
     The line density and area density have been counted.
     区的密度
短句来源
     Density "Experiment
     密度的实验
短句来源
     The results showed that fog and maximum density could be reduced obviously by using antifoggant;
     实验结果表明:防灰雾剂可以明显地降低灰雾和减小最大密度;
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  fog density
Fog density determined on the edge of the film far from the irradiated field can overestimate fog due to leakage radiation.
      
In addition to the stepwedge, a 3-by-3-mm lead square 1 mm thick provided an unexposed area on the film for measurement of base plus fog density.
      
Light and dark regions correspond to regions of high and low fog density, respectively.
      
The density due to radiation exposure, called the net OD, can be obtained from the measured density by subtracting the fog density.
      
The number of species was found to increase with fog density and decrease with wind velocity.
      


In sensitometry, the sensitivity, contrast coefficient and fog density are generally deduced from characteristic curve graphically. The graphical method of determination of the characteristic parameters has certain limitations. In this paper, the author attempted to obtain these characteristic parameters by using mathematical models.

在感光测定中,一般都用图解的方法从感光特性曲线上求出感光度、反差系数和灰雾密度等特性数值。用图解法求得的三个参数有一定的局限性。本文作者采用数学模拟法求出这些参数值。

The paper describes the variation of some characteristics of the nuclear emulsion such assensitivity, fog density and latent image stability influenced by adding ascorbic acid into the fi-nished emulsion N-4. A comparative study of latent image stability is made between Fuji ET-7Bnuclear emulsion and our's under different temperature and relative humidity. The result indi-cates that the addition of ascorbic acid obviously improves the latent image stability of the emul-sion N-4. The Fuji ET-7B emulsion and the...

The paper describes the variation of some characteristics of the nuclear emulsion such assensitivity, fog density and latent image stability influenced by adding ascorbic acid into the fi-nished emulsion N-4. A comparative study of latent image stability is made between Fuji ET-7Bnuclear emulsion and our's under different temperature and relative humidity. The result indi-cates that the addition of ascorbic acid obviously improves the latent image stability of the emul-sion N-4. The Fuji ET-7B emulsion and the emulsion N-4 containing ascorbic acid have similar la-tent image fading quality at lower temperature while the Japanese sample does better at roomtemperature.

文章介绍抗坏血酸对核乳胶灵敏度、灰雾密度及潜影衰退性能的影响,并与日本富士ET-7B型乳胶的潜影稳定性能在不同温度和相对湿度条件下作相应比较。

Potassium bromide, 1, 2, 3-benzotriazole and 6-nitrobenzimidazole are common used developer inhibitors. This paper,on the basis of experiments, provides the relationships between the adding amounts and the photographic properties,such as fog density,gamma and sensitivity. The inhibition mechanism and some conclusions are given.

通过实验测定了三种常用显影抑制剂──溴化钾、三氮茚、6-硝基苯并咪唑的含量与灰雾密度、反差系数、感光度的关系,分析了它们的作用原理,获得了抑制剂性能的一些结论。

 
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