biotic level 中文意思是什麼
biotic level
解釋
生物層次-
The results showed that both of water enverionment and biotic enverionment were good, and surface sediment enverionment was polluted in middle level besides that of some stations were seriously polluted, in which c ( subscript d ) plaied a main role in pollution
結果表明,水質環境和生物環境處于良好水平;表層沉積環境處于污染水平,有的站達到嚴重污染水平,其中重金屬錫的貢獻率最大。
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