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grassland agriculture
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grassland agriculture
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农学
草地农业
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grassland agriculture
草地农业
以草地资源为基础,从事资源保护利用、植物生产和动物生产及产品加工经营,以获取生态、经济和社会效益的基础性产业。
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rocketry
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rocket ultraviolet astronomy
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rocket γ-ray astronomy
rock explosibility
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rock failure criterion
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rockfill dam
rock-filled concrete dam
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rock-forming elements
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