“no observed-adverse-effect level”的概念、定义、翻译、参考文献-科学参考

单词	no observed-adverse-effect level
释义	no observed-adverse-effect level Encyclopedia 工学食品安全风险评估释 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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