| 1. | Some distance above the lead block a photographic plate is placed .
在铅块上方某一距离处放一照相底板。 |
| 2. | In the mass spectrograph the ions are focused onto a photographic plate .
在质谱仪中，离子聚焦在感光板上。 |
| 3. | Ions of different isotopes converge at different points on the photographic plate .
在照相底板上不同的同位素的离子会聚于不同点。 |
| 4. | At first glance it does not seem that a few black lines on a photographic plate can get us very far in understanding the stars .
乍看起来，似乎看不出照相底版上的几条黑线能给我们多少关于恒星的知识。 |
| 5. | In photographic photometry we use photographic plates of a certain region of the sky to determine the coordinates of the stars .
在照相测光中，我们利用所拍摄的天空某一区域的照相底片来测定恒星的坐标。 |
| 6. | Nowadays the light collected by the lens or mirror of a telescope is directed to a photographic plate rather than to the astronomer's eye .
被望远镜的透镜或反射镜所收集的光线，如今直接射到照相底板上，而不是天文学家的眼睛里。 |
| 7. | Photographic plates become darkened on exposing to x - rays
照像底片一曝露在射线下就变黑。 |
| 8. | Imaging materials - processed photographic plates - storage practices
成像材料.处理过的照相干版.储存规程 |
| 9. | The measurement of the sensitive character of astronomical photographic plate
天文照相底片感光特性的测量研究 |
| 10. | Autoradiography a technique whereby a tin slice of tissue containing a radioactive isotope is placed in contact with a photographic plate
放射自显影术：将含有放射性同位素的一小薄片生物组织与感光层接触的一项技术。 |
