这个词是什么意思？
Total mass of all the organisms of a given type and/or in a given area. (From Concise Dictionary of Biology, 1990) It includes the yield of vegetative mass produced from any given crop.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D018533 · MeSH 2026。
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