absolute emission cross section的用法和样例：
- The absorption spectrum and fluorescence spectrum of the two crystals were measured, the absorption cross section and emission cross section of the major peaks were calculated.
- Stimulated emission cross section
- For He+ +Li collision system, Lil 670.8 nm emission cross sections linked well with the results of Aumayr et al. at the low energy points.
- Keywords niobate-tellurite glass;spectroscopic proper ties;absorption cross section;emission cross section;