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nutrient criteria
释义
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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proper subobject
proper subset
proper subspace
proper subsystem
proper subvariety
proper suffix
proper superset
proper surface
proper surface of second order
proper system
proper tetrad
properties
Properties and Actions of Medicinals
properties and evaluation of cement
properties based drug design
properties of ceramic slurry
properties of Chinese medicinals
properties of determinants
properties of flame
properties of material
properties of matter
properties of measuring devices
properties of metals
properties of muscle working
properties of refractories
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