flood invt.涌进(流进)floodv.淹没；充满n.洪水flood frequency curve洪水频率曲线flood warning service洪水报警机关,防汛机构flood-control basin防洪区flood inundation area洪水淹没范围flood-lighting plan防洪规划flood detention basin分滞洪区flood diversion basin分洪区flood spreading model洪水蔓延模型flood control berefit防洪效益flood control storage防洪库容