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Schadstoffkonzentration
f f =
environ.
污染物浓度
(测定污染物质在给定的水、土、空气、食物或其它媒介中的量。)
;
污染物水平
(在一个特定的区域代表污染浓度的一个值,通常由测量和记录设备决定。)
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