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以农村社会为基本范围,以农业生产实际需要和农民需求为基本内容,以改善农民生活质量、提高农业生产效率、实现农业可持续发展为最终目标的农村社会现代教育。
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principal minor
principal minor array
principal minor determinant
principal module
principal moment
principal moment of inertia
principal net of a mapping
principal net of the flow
principal neutral point
principal nilpotent orbit
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