Keywords Oncomelania hupensis;Conventional survey;Individually repeated survey;Crossed-repeated survey;Crosscheck-random sampling inspection survey;Marshland and lake regions;
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湖北钉螺;常规调查;个人重复调查;交叉重复调查;交叉复核随机抽检调查;湖沼地区;
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海词词典,十七年品牌