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demography
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demography
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释
demography
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研究人口发展及其规律,人口变量与社会、经济、生态环境等变量之间相互关系的一门学科。
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demography
人口统计学
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demography
种群统计;人口统计学
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agricultural scale operation
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agricultural soil and water resources utilization
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agricultural stable isotope tracer technique
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agricultural statistics
agricultural strategic structural adjustment policy
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agricultural supply chain
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agricultural sustainable development policy
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