Non - point source pollution has some characteristics , such that its harm is heavy and it is difficult to prevent 和点源污染相比，面源污染危害规模大、防治困难。
In the 1970s efforts to prevent and control industrial pollution in china mainly concentrated on the control of point sources 70年代，中国的工业污染防治主要集中在点源治理上。
Because this runoff emanates from a wide area rather than a single source , it is classified as nonpoint source pollution 又因为暴雨迳流来自广大的地区，非单一来源，所以归类为非点源污染。
With the expansion of towns in jiangsu , china , the pollution of non - point pollutant and sewage has been more serious 摘要由于城镇规模的不断扩大，小城镇的非点源污染和生活污水污染负荷日益增加。
The industry , residential point source along the river and phosphorus mine non - point source are of great water pollution load 确定库湾周边的工业、生活污染点源，磷矿面源是构成水污染的主要负荷。
Abstract : the concentration field distributions of the elevated point sources is calculated using a numerical calculation method 文摘:使用数值计算的方法来计算给定源强下的高架排放点源的浓度场分布情况。
The water pollution can be divided into two major categories of point source and area - source pollution according to the different way of discharge 摘要根据排放方式的不同，水体污染可以分为点源污染和非点源污染两大类。
Also shown are huge clouds of multimillion degree gas and bright point like sources due to neutron stars and black holes 同样显现在其中的是巨大的气体云团，温度达几百万度，还有明亮的点源，这是由于中子星与黑洞造成的。
It is suggested that these anomalies are of radium nature having spot - form and deep - sourced features and are closely associated with wudaoliang fault 认为该航放异常系镭异常，具有点源、深源性质，与五道梁断裂密切相关。
Point - sourc reflector radiator and point source array radiator were adopted to study experimentally the transmission property of ultra - short pulse 采用了点源?反射面型及阵列型辐射器对超短脉冲的辐射特性进行了实验研究。
