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nutrient criteria
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nutrient criteria
Encyclopedia
工学
大气污染物环境基准
释
nutrient criteria
营养物基准
水体中产生的生态效应不危及其功能或用途的营养物浓度或水平。可以反映受到人类开发活动影响程度最小的地表水体营养状态。主要指地表水体中浮游藻类生物不产生过量生长现象(水华现象),不致危害该水生态系统结构或功能的水体中营养物质的安全阈值。
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ultraviolet curing ink
ultraviolet cutoff
ultraviolet cytophotometry
Ultraviolet Detector
ultraviolet detector
ultraviolet disinfection
ultraviolet disinfection in water
ultraviolet divergence
ultraviolet drop-out
ultraviolet dwarf
ultraviolet earth sensor
ultraviolet emission and absorption
ultraviolet excess
ultraviolet-excess object
ultraviolet-excess star
ultraviolet extinction
ultraviolet-extreme ultraviolet CCD detector
Ultra Violet filter
ultraviolet filter
ultraviolet fixed point
ultraviolet fluorescence spectrum
ultraviolet identification
ultraviolet image
ultraviolet imager
Ultraviolet Imaging techniques
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