用标志重捕法调查某种鼠的种群密度时第一次捕获并标记54只第二次捕获27只其中有标记鼠12只.则该鼠群的种群数量估计值为 A.69只b Template




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tomski用标志重捕法调查某种鼠的种群密度时第一次捕获并标记54只第二次捕获27只其中有标记鼠12只.则该鼠群的种群数量估计值为 a.69只b coloring