population density method
population density method
人口密度法
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Methods Sequential investigation into the density and population of rodents in the Yichang section of the Three Gorges area had been implemented with the trap-night method since 1959.
方法自1959年以来连续在三峡库区宜昌段用夹夜法调查鼠类种群及密度。
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