volumetric moisture content meaning in English

体积含水量
体积湿分含量

Analysis about rainfall influence on volumetric moisture content of unsaturated zone
大气降雨对土坝非饱和区含水率影响分析
Laws about volumetric moisture content changes and wetting deformation in unsaturated zone are analysed according to different rainfall intensities and duration by saturated - unsaturated seepage theory in this text
摘要运用非饱和渗流理论分析了不同降雨强度和降雨持续时间对土坝非饱和区含水率变化规律。