| 1. | Geometric conditions for measuring transmission density 摄影透射密度测量的几何条件 |
| 2. | Geometric conditions for photographic reflection density measurement 摄影反射密度测量的几何条件 |
| 3. | Photographic density measurements - geometric conditions for transmission density 摄影密度测量.传输密度的几何条件 |
| 4. | Photography - density measurements - geometric conditions for reflection density 摄影技术.密度测量.反射密度用几何学条件 |
| 5. | Photography - density measurements - part 2 : geometric conditions for transmission density 摄影技术.感光密度测量.第2部分:透射密度的几何条件 |
| 6. | Photographic sensitometry , determination of optical density ; geometric conditions for reflection density 照相感光度测量技术.光密度的测定.反射密度的几何条 |
| 7. | Photographic sensitometry , determination of optical density ; geometric conditions for transmission density 照相胶片感光度测定.光密度测定.透射密度的几何条件 |
| 8. | Abstract : it introduces the boring method under different geometric conditions and points to be noted in constructing foundation for piles of tieshan harbor bridge 文摘:介绍铁山港跨海大桥桩基础不同地质情况下的钻孔方法和注意的问题。 |