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生态系统中的初级生产者(主要是浮游植物)维持生长发育与新陈代谢生命活动过程必须的元素(金属离子、氨离子和酸根离子组成的化合物)。
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coefficient of mutual induction
coefficient of nondetermination
coefficient of opacity
coefficient of performance
coefficient of performance for cooling
coefficient of performance for heating
coefficient of permeability
coefficient of proportionality
coefficient of raised path throuth fields
coefficient of rank correlation
coefficient of reflection
coefficient of refraction
coefficient of refrigerating performance
coefficient of regression
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coefficient of residual gas
coefficient of residual strength
coefficient of restitution
coefficient of rotation
coefficient of runoff regulation
coefficient of seismic effect
coefficient of selective absorption
coefficient of self induction
coefficient of self-induction
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