工具书 关键词 句对库 合计 water surface evaporation 1 15 70 86 evaporation from water surface 2 7 20 29 water evaporation 1 1 12 14 evaporation of water surface 0 2 2 4 surface evaporation 0 0 79 79        地球物理学  农业基础科学  气象学  水利水电工程  农艺学  合计 water surface evaporation  30   9   6   7   7   59  evaporation from water surface  4   2   4   0   0   10  water evaporation  3   2   1   0   2   8  evaporation of water surface  1   0   0   0   0   1  surface evaporation  32   9   7   10   7   65