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| 71. | The film is coated with light-sensitive chemicals, which are changed by the different shades and colours |
| 胶卷上涂了一层感光的化学物质，这些物质因光的不同色度与颜色而改变。 |
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| 72. | photographic spectrum |
| 照相感光范围 |
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| 73. | photographic speed |
| 照相感光速度 |
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| 74. | Sensitive to actinic light rays; used with a colloid as a sensitizer for lithographic printing plate |
| 光化光引起它的感光作用。把它混和胶体，可作平版印刷的版面感光性涂料。俗称红矾。 |
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| 75. | wipe-on plate |
| 涂感光版 |
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| 76. | Sensitivity guide |
| 感光导表 |
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| 77. | sensitized photographic plates |
| 感光照相板 |
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| 78. | underexposure n. |
| 照像感光不足 |
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| 79. | An early photographic process with the image made on a light-sensitive silver-coated metallic plate. |
| 达盖尔银版法一种早期的照像术，把像照在易感光的镀银金属版上 |
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| 80. | additives for photographic emulsion |
| 感光乳剂添加剂 |
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