这个词是什么意思？
The study of the physical, chemical, hydrological, and biological aspects of fresh water bodies. (EPA Terms of Environment: Glossary, Abbreviations and Acronyms [Internet] US Environmental Protection Agency [cited 2008 Sep 25] available from http://www.epa.gov/OCEPAterms/aterms.html)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D055994 · MeSH 2026。
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