测量工况 | 强吸收 | 弱吸收 | |||
nf/1f模型 | 1阶近似 | 2阶近似 | 1阶近似 | 2阶近似 | |
2f/1f测得浓度(%) | 0.989 | 0.998 | 0.0810 | 0.0925 | |
4f/1f测得浓度(%) | 0.998 | 0.995 | 0.0934 | 0.0933 | |
6f/1f测得浓度(%) | 0.997 | 0.995 | 0.0933 | 0.0934 | |
相对标准偏差 | 0.51% | 0.18% | 8.0% | 0.53% | |