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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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4C星表
4D gravity survey
4 dimensional covariant
4-dimensional covariant
4 dimensional form of Lorenz transformation
4-dimensional form of Lorenz transformation
4-dimensional geometry
4-dimensional manifold
4 dimensional n order tensor
4 dimensional n-order tensor
4-dimensional n-order tensor
4 dimensional second order tensor
4 dimensional second-order tensor
4-dimensional second-order tensor
4-dimensional universe
4D navigation
4D seismic data processing
4 force vector
4-force vector
4G
4GL
4G网络
4H-benzopyran-4-one, chromone
4H-chromen-4-onee
4He vapour pressure thermometer
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