... 特有的；固有的 endemic 平时密度 endemic density 固有害虫 endemic pest ...
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The differences of survival and reproduction rates of Oncomelania snails between low and high density groups in different endemic areas were statistically significant (P<0.05).
不同流行区钉螺低密度及高密度组间的存活率和繁殖倍数差异均有统计学意义（P<0.05）。
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