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天然水质
释义
天然水质
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水体质量
释
natural water quality
天然水质
自然环境中的水体与其所含物质共同表现出的物理、化学和生物学等方面的综合特性。天然水因其所处的自然环境及存在的状态不同,水质状况存在差异。
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elementary alternating expression
Elementary and Secondary Education Act (U.S.A.)
elementary arc
elementary arithmetic
Elementary Astronomical Instrument
elementary automaton
elementary axiom system
elementary beam
elementary behavioral science
elementary catastrophe
elementary catastrophes
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elementary cellular automaton
elementary chain
elementary characteristic
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elementary cluster graph
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elementary column transformation
elementary commutative group
elementary complex function
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