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fimic epipedon
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fimic epipedon
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农学
土壤诊断表层
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fimic epipedon
肥熟表层
长期种植蔬菜,大量施用人畜粪尿、厩肥、有机垃圾和土杂肥等,精耕细作,频繁灌溉而形成的高度熟化人为土壤表层。中国土壤系统分类建立的一个诊断表层。
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fundamental problem
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fundamental rights and duties of states
fundamental rights of the citizen
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Fundamental Rule of Chart Parsing
fundamental semi-invariant
fundamental sequence
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fundamental sheaf
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