| 单词 | biotic index |
| 释义 | biotic index noun[C] environmentspecializeduk/baɪˌɒt.ɪk ˈɪn.deks/us/baɪˌɑː.t̬ɪk ˈɪn.deks/a way ofmeasuringthepollution(=dirtysubstances)inwater, e.g. ariver, bycountingtheorganismsin it 生物指数Environmental issues
Examplesofbiotic indexbiotic index Bioticindexsurveys report mayfly and stonefly nymphs, caddis fly larvae, dragonfly and damselfly nymphs and crayfish. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.Other historically important work sought to provide biotic indices for classifying waters according to the biotic communities that they supported. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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