The relative change rate of land use type is an index reflecting regional difference of change of land use .
土地利用类型的相对变化率是一种反映土地利用变化地区差异性的指标。
Refractive index field of atmosphere distributes homogeneously due to the difference of pressure, temperature, relative humidity and carbon dioxide content in the atmospheric optics.
在大气光学成像领域，由于大气中压强、温度、相对湿度和二氧化碳含量的不同，导致大气折射率场呈非均匀分布。
In this article, the influences of the mode field diameter, the cutoff wavelength and the relative refractive index difference on the OTDR curve are also verified.
文中还验证了单模光纤的模场直径、截止波长、相对折射率差对OTDR曲线的影响。
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