雪区 meaning in English

snow patch
snow region
snowpatch

The scattering matrixes and the power of the definite coated cylinder are calculated and the mueller matrix is obtained by means of statistics
用统计方法计算出了单位体积雪区的平均mueller散射矩阵，并对后向散射功率进行了分析。
The scattering impairment due to a melting layer are also more than rain and snow at 6 , logghz , and at the 20 , 30ghz slightly more than the rain
在6 、 10ghz ，融化层引起的散射损耗要大于雨区和雪区的损耗，而在20 、 30ghz ，稍微大于雨区的损耗。