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无可见不良作用剂量水平
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无可见不良作用剂量水平
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no observed-adverse-effect level
无可见不良作用剂量水平
在一定时间内、规定的暴露条件下,使用最灵敏的试验方法和观察指标发现的,与同一种属正常(对照)相比,一种物质不引起目标生物在形态、功能、生长、发育或寿命等方面出现任何不良作用改变的最大浓度或量。又称未观察到不良作用水平。通常以每千克体重的物质质量表示。
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coefficient of covariation
coefficient of cubical expansion
coefficient of curvature tensor
coefficient of deformation
coefficient of determination
coefficient of diffusion
coefficient of dilatation
coefficient of divergence
coefficient of elasticity
coefficient of excess
coefficient of expansion
coefficient of friction
coefficient of harmonic distortion
coefficient of hydrodynamic dispersion
coefficient of isobaric expansion
coefficient of kurtosis
coefficient of linear expansion
coefficient of multiple correlation
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
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