discharge amount of arbor vegetation though runoff was 5.68kg/km2.a, while shrub and herbage vegetation were 3.32 kg/km2.a and 2.49 kg/km2.a, respectively. The P2O5 discharge amount of是什么意思_discharge amount of arbor vegetation though runoff was 5.68kg/km2.a, while shrub and herbage vegetation were 3.32 kg/km2.a and 2.49 kg/km2.a, respectively. The P2O5 discharge amount of在线翻译_英语_读音_用法_例句