photometric intensity的用法和样例：
例句
- The molecular extinction coefficient is equal to the ratio of the log of the intensity of the incident and emergent light.
分子的消光系数等于入射光和透射光强度对数的比。 - At zero intensity, the last glimmer of the light vanishes into the atoms, and the polariton comes to a dead stop.
到了控制光强度归零之时，光的最后一丝光芒都消逝到原子里，极化声子就完全停止了。
