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城市水源的英文

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"城市水源"怎么读用"城市水源"造句

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  • urban water resource

例句与用法

  • In chinese north cities , more than 70 % of drinking water resource is surface water which has been seriously polluted by organic matters and algae
    我国北方城市水源70以上为地表水,有机物污染严重,藻类大量繁殖,各种浮游动物孳生,常规处理工艺无法满足安全饮用水供应的需要。
  • It shows the short supplement of water , the contradiction of water supplement and demand is becoming conspicious . now china lacks 60 billion cubic meters in urban and 300 billion cubic meters in agriculture ; in the second place , water pollution and water waste are side by side . 80 percentage sewage has drained into the waters without handling , leading to one third rivers have been polluted , 90 percentage or more the source of urban water has been seriously polluted , 50 percentage or more the location of key urban water source has n ' t been accorded with the standard of drinking
    主要表现在水资源供需形势日趋紧张,需求量与可利用水量之间矛盾尖锐,目前我国城市缺水60亿m ~ 3 ,农业缺水300亿m ~ 3 ;其次水污染与水浪费现象并重,目前在我国80左右的污水未经处理直接排入水域,造成全国1 3以上的江河段受到污染, 90以上的城市水源严重污染, 50以上的重点城市水源地不符合饮水标准。
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