photographic density

1. Geometric conditions for photographic reflection density measurement
   GB/T12822-1991摄影反射密度测量的几何条件
2. In dot etching, the photographic construction of individual dots to provide a proper density gradient suitable for dot size reduction.
   中义在网点修整中，个别的网点结构依网点大小提供适当的浓度变化。
3. An instrument for determining optical or photographic density.
   测量光学或摄像的密度的仪器。
4. "Terms, symbols, coordinate system and functional notations for photographic density measurements"
   GB/T12823-1991摄影密度测量的术语、符号、坐标系和函数表示法
5. Contact print: A photographic print of a negative or positive made in contact with, and therefore the same size as, the original. Fogged negatives or insufficient density in positives, particularly in the highlights or in fine printing detail, may cause this problem.
   接触晒印：将阳图或阴图触及曝光所造成的相片。这个方式，只可作原大晒印。不清洁的负片或浓度不足的正片容易在较精细印刷的亮部处发生这种现象。
6. As a hole-traping dopant, formate can enhance the photographic sensitivity of the emulsions as high as 3& 8 times without an increase in fog density.
   实验发现：作为正空穴捕获剂，适当计量的甲酸盐在不增加乳剂灰雾的前提下，可使上述乳剂的感光度提升3&8倍。
7. First a conversion of the speech signal prerecorded on a magnetic tape to amplitude transmittance of photographic film is accomplished with a cathode ray tube ( CRT) using density modulation method.
   借助于阴极射线示波器，首先将录制在磁带上的语音信号用密度调制的方法转变为照相底片的振幅透射率的变化，从而实现信号由时域到空域的转变。

noun

1. (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation

   Synonym:    optical densitytransmission densityabsorbance