出幅度 meaning in Chinese

cn-31

The character of surface radiation and energy expended over soil temperature variation is that the temperature variation at surface , 5cm depth and 10cm depth are approximately sine curve on clear and cloudy day while this way the temperature variation at 20cm depth shows small extent anti - phase variation and the temperature under 50cm is no diurnal . in contrast , the temperature at 5m , 10cm and 20cm shows linear decrease and the soil - surface temperature is concaved on rainy day
地表辐射和能量耗散反映在土壤温度变化上的特征是晴天和阴天地表、 5cm 、 10cm的温度变化表现为准正玄曲线， 20cm深处的温度变化呈现出幅度很小的反位向变化， 50cm以下地温已不存在日变化特征；雨天5cm 、 10cm和20cm的温度呈线性递减，地表温度表现出由降雨引起的凹陷现象。