| 1. | The dipole oscillator sum can be expressed in terms of the integrated photo absorption cross section .
偶极谐振子和可以用积分后的光子吸收截面来表示。 |
| 2. | Dual photon absorptiometry , dpa
双光子吸收法 |
| 3. | Two - photon absorbed organic materials and application in three - dimensional digital optical data storage
双光子吸收有机材料及其在三维数字光存储中的应用 |
| 4. | Nowadays , many experimental measurements of tpa cross sections of organic molecules take place in solutions
目前，有机分子的双光子吸收性质都是在溶剂中测量的。 |
| 5. | In the first chapter , nonlinear optics and the research of two - photon absorption materials are introduced
第一章主要介绍了非线性光学和双光子吸收材料的研究现状。 |
| 6. | And someone found that symmetry molecule ' s tpa cross section is larger than asymmetry molecule ' s
还有人发现，对称型分子比不对称型分子更有利于增大分子的双光子吸收截面。 |
| 7. | However , the development of two - photon technology is confined because of the small tpa cross sections of materials
然而，由于一般材料的双光子吸收截面很小，双光子吸收的实际应用受到限制。 |
| 8. | Furthermore , with the increase of the polarity of solvent , the excited energies is decreased and the tpa cross section is increased
而且，随着溶剂极性的增加，激发态的激发能减小，双光子吸收截面增大。 |
| 9. | A comparison between single photon absorptionetry of bone mineral density and laminated cortex index of radius and ulna in diagnosing osteoporosis
比较桡尺骨皮质分层指数与单光子吸收法骨矿定量法诊断骨质疏松症的价值 |
| 10. | The results show that the solutions hardly change the structure of molecules , but have a significant effect on the two - photon absorption of molecules
计算结果表明，溶剂对分子的几何结构影响很小，但对分子的双光子吸收有较大的影响。 |
