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  日前,由正定县科技局组织申报的“正定县奶牛优化饲养关健新技术的引进与示范”获河北省科技富民强县专项行动示范县建设立项支持。  据正定县科技局局长高海林介绍说,今年以来,正定县科技局根据当地优势和�...

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