| 1. | 4 . the differential pas is present and accomplished
提出导数光声光谱技术，并用软件实现。 |
| 2. | Sensitive wavelength - modulated photoacoustic spectroscopy with dfb diode laser
灵敏的基于分布反馈式半导体激光波长调制光声光谱 |
| 3. | On - line and automatic measurement of solution concentration using led and linear array ccd
激光光声光谱法测量煤矿瓦斯气体的研究 |
| 4. | Discussion about distortion of the two edges of signal disposing in differential photoacoustic spectroscopy
导数光声光谱信号处理过程中两端失真问题探讨 |
| 5. | 2 . the double beam normalizing pas technique is improved and studied through the experiment
对常用的双光束归一化光声光谱技术进行改进，并进行实验研究。 |
| 6. | Put forward a technique of derivative photoacoustic spectrum and developed a set of derivative photoacoustic spectrum experiment system
提出了导数光声光谱技术，研制了一套导数光声光谱实验系统。 |
| 7. | In this paper , the theory and application of photoacoustic spectroscopy and cavity enhanced absorption spectroscopy are studied in detail
本文对微量气体光声光谱与腔内增强吸收光谱检测技术的理论与应用做了较深入的研究。 |
| 8. | The theory of photoacoustic spectroscopy is described in detail , and is applied to the design of a low noise , high sensitivity longitudinal resonant acoustic cell
详细讨论了光声光谱的理论，设计了低噪声、高灵敏度的纵向共振光声池，制作了信号测量与数据处理软件。 |
| 9. | Emphasizing the application of the photoacoustic spectroscopy ( pas ) technique in biology and medical , the development of the pas technique is summarized at the first part of the dissertation
本论文第一部分概述了光声光谱技术的发展，尤其是光声光谱技术在生物医学上的应用。 |
| 10. | Firstly , this paper introduces the molecule ’ s structure , the molecule ’ s spectrum and infrared spectrum structure of so2 , and then the theory of gas detection using photoacoustic effect is discussed
本文从分子结构和分子光谱理论出发讨论了so2的红外光谱结构，介绍了气体光声光谱检测理论及光纤光相位调制解调的技术和方法。 |
