非点源污染物 nonpoint source pollutant ; non-point pollutant 点和非点源污染 Point and Non-point Source Pollution 潜在非点源污染指数 potential non-point pollution index ..
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In contrast with point source pollution, non-point pollution is difficult to control and prevent because of its randomicity, intermittence, hysteresis and complexity.
与点源污染相比，非点源污染具有随机性、间歇性、滞后性、复杂性等特点，不易控制和治理。
With the point source pollution being reduced gradually, the non-point source pollution has become the main factor of the water pollution and tends to be worse.
随着点源污染得到逐步治理，面源污染已成为水体污染的主要原因，并有逐渐恶化的趋势。
AGNPS (agricultural non point source) model is a computer model specialized for predicting and evaluating the agricultural non point source pollution of a watershed.
AGNPS模型是美国研制的、专用于模拟小流域土壤侵蚀、养分流失和预测评价农业非点源污染状况的计算机模型。
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