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沟洫工程技术
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沟洫工程技术
关于中国夏商周时期灌溉、排水渠系的记录与总结研究。沟洫系统肇始于夏,发展于商,至周代趋于规范化,在实施井田制的地区逐渐形成纵横交错的农田沟洫体系。
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nuclear medical imaging
nuclear medicine
nuclear medicine diagnosis
nuclear medicine instruments
nuclear medicine technology
nuclear meltdown
nuclear membrane
nuclear microprobe
nuclear migration
nuclear model
nuclear modification factor
nuclear molecular state
nuclear moment
nuclear moment of inertia
nuclear neutron RMS radius
nuclear non-proliferation
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nuclear operator
nuclear orbital magnetic moment
nuclear orientation
nuclear orientation thermometer
nuclear Overhauser effect
nuclear Overhauser effect enhancement spectroscopy
nuclear Overhauser effect (NOE)
nuclear Overhauser effect spectroscopy
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