| 1. | In this definition, the contrast is given by the ratio of two light densities .
对比度定义为两个光密度之比。 |
| 2. | This increased optical density caused by a disassociation or melting of the dna is called hyperchromicity .
这种由于DNA离解或融解引起的光密度增加，称之为增色效应。 |
| 3. | The definition and sharpness of the images depends on the light density of the surroundings and on the magnification .
象的分辨力和清晰度取决于周围背景的光密度和放大率。 |
| 4. | The optical density is variable along the straight line
沿直线的光密度变化相对较小。 |
| 5. | The variation is relatively small along the straight line
沿直线的光密度变化相对较小。 |
| 6. | An optical density method for determination of microalgal biomass
光密度法测定微藻生物量 |
| 7. | Plastics - smoke generation - guidance on optical - density testing
塑料.起烟.光密度测定指南 |
| 8. | Automatic scanning microdensitometer
自动扫描显微光密度计 |
| 9. | Study and application of optical density curve model for recordable disc
可写光盘光密度曲线模型的研究及应用 |
| 10. | Plastics . smoke generation . part 1 : guidance on optical - density testing
塑料.烟雾产生.第1部分:光密度试验指南 |
