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渔业环境重金属污染
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渔业环境重金属污染
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渔业环境重金属污染
释
heavy metal contamination of fisheries environment
渔业环境重金属污染
重金属及其化合物在渔业环境中超过允许标准,对渔业生态环境和渔业生物造成急性中毒或慢性影响的现象。重金属指比重大于5的金属(一般指密度大于4.5克/厘米3的金属)。
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derivable statement
*-derivation
derivation
derivation algebra
derivation formula
derivation module
derivation of a field
derivation of a Lie algebra
derivation of an algebra
derivation of a polynomial
derivation of a ring
derivation rule
derivation tree
derivation weaves
derivative
derivative control
derivative coupling
derivative deposits
derivative dictionary
derivative forward backward semiclassical dynamics
derivative forward-backward semiclassical dynamics
derivative-free
derivative-free method
derivative function
derivative in a direction
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