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deva n
environ.	剂量 监控的试验用物质的数量。剂量是指试验用物质的重量(如克、毫克)与每单位重量的实验动物(如毫克/千克)之比值，或是与食物、饮用水的重量比值。

deva: 5 phrases in 1 subject

Environment

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