absorbed radiant flux的用法和样例：
- Ratio of the absorbed radiant or luminous flux to the incident flux.
- The ratio of luminous flux at a specific wavelength to the radiant flux at the same wavelength.
- The results show that the ignition delay time is shortened along with the increase of the oxygen content, burning rate of HTPB propellant and the laser radiant flux.
- The effect of the oxygen content, burning rates of HTPB propellants and the laser radiant flux on the ignition delay time was investigated experimentally with a CO2-laser ignition apparatus.