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path of agricultural technology progress
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path of agricultural technology progress
Encyclopedia
经济学
速水-拉坦诱导性创新理论
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path of agricultural technology progress
农业技术进步道路
农业生产中先进技术对落后技术的替代方式。表现为用同样多的农业资源可以生产出更多的农产品,或者生产同样多的农产品只需要投入比以前更少的农业资源。
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An Introduction to Chinese Operas
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an introduction to surveying and mapping
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An Investigation of Inscriptions on Sacrificial Vessels by Fang Junyi
An Investigation of Stele Inscription, A Contiunation of An Investigation of Stele Inscriptions
An Investigation of Successful Candidates in Imperial Examinations of the Tang and Five Dynasties
An Investigation of the Laws of Thought
aniobium alloy for wear and corrosion
anion
anion channels
anion exchange membrane
anion exchanger
anion fiber
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