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夏熟旱作植被
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夏熟旱作植被
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夏熟旱作植被
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summer rainfed cropland
夏熟旱作植被
在降雨量不足且没有灌溉的农业生产制度下,由上年秋冬季或当年春季播种、在夏季收获的旱地作物构成的植物群落。
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sigmoid function
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Sigmund Freud
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signal adaptor protein
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