Even setting aside the unproven hints of ancient oceans, the extent of the outflow channels suggests that a huge total volume of water existed on Mars in the past.
即使不考虑未经证实的古代海洋迹象，流出渠道的范围表明，过去火星上存在着大量的水资源。
The concentrations of some pollutants in the outflow are higher than those in the irrigated water. The water is not comprehensively polluted with few indices beyond the standard.
灌溉退水中部分污染物浓度较灌溉水上升，个别单项指标超标，但不构成综合污染。
Rising and falling of flood water level not only leads to the increase and decrease of underground water near the bank, but also restricts the change of runoff outflow routing.
洪水的涨落不仅引起河岸附近地下水蓄水量的增减，同时也制约着地下径流过程的变化。
应用推荐