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Water resources
containing
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原
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植物
protophyte
废水兼性微
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物处理
biological treatment of wastewater by facultative microbe
彗
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式纤维滤料
cometlike filtration medium
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物生态学
bio-ecology
暂行一
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期容许摄取量
世界卫生组织
provisional weekly tolerance intake
水体自净
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物工艺
biological process of water body self-purification
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