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环保标准有很多。我国自称用了不错的标准。具体关心的指数也很多。这里关心臭氧。我国关心更严重的指数,悬浮物,co,co2,no,等等。湖滩地区和工业区的污染类型是不同的。

guest (地球村村民)
(#158158@0)
2001-8-6 -04:00
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