某波长下入射光的强度 incident light intensity
分子的消光系数等于入射光和透射光强度对数的比。
The molecular extinction coefficient is equal to the ratio of the log of the intensity of the incident and emergent light .
得到了双光子吸收的荧光强度和入射光的能量密度平方成正比。
The fluorescence intensity of TPA was in direct ratio with square of incident energy consistency.
结果表明：随着入射光强度的增加，空气进出口温差、热和（火用）效率是增大的，而电效率则有所降低。
Results show that the air temperature difference, thermal and exergy efficiency increase with incident solar intensity increasing, but the electrical efficiency decreases.
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