水面反射系数
water-surface reflection coefficient
水面下反射率
subsurface irradiance reflectance
基本点防御水面飞弹系统
basic point defense surface missile system {= BPOSMS
湖水面演变历史
Fluctuation of lake-level
河道水面曲线计算
river water sarface curve
合理水面率
reasonable water surface rate