Spring flood period of poor water quality, water quality levels ranged between class II and III , other times, water quality stability in the level II .
春汛期间水质较差介于II类和III类之间，平水期和冰封期稳定于II类水质。
Spring flood period of poor water quality, water quality levels ranged between class II and III , other times, water quality stability in the level II .
春汛期间水质较差介于II类和III类之间，平水期和冰封期稳定于II类水质。
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