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Letterpress printing appeared for a long time in the Ming Dynasty
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2024-03-17 21:13:36
Letterpress printing appeared for a long time in the Ming Dynasty
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Aa I feel so sad when I don’t see you for a day
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"Nitrogen and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 3: Nitric acid rain and its prevention and control)
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80 common PPT icon materials in hand-painted style
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"Common Salt in Life" Salt Fertilizer PPT Courseware 3
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"Common Salt in Life" Salt Fertilizer PPT Courseware 5
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80 common PPT icon materials in hand-painted style
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"The Rise of Mongolia and the Establishment of the Yuan Dynasty" The southward shift of the economic center of gravity and the development of ethnic relations PPT courseware 3
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"The Rise of Mongolia and the Establishment of the Yuan Dynasty" The southward shift of the economic center of gravity and the development of ethnic relations PPT courseware 4
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"Comprehensive calculation and judgment about pressure and buoyancy" Buoyancy PPT
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"True Fractions and Improper Fractions" PPT courseware on the meaning and nature of fractions
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"Diamond, Graphite and C60" Carbon and Carbon Oxides PPT Courseware 3
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"Diamond, Graphite and C60" Carbon and Carbon Oxides PPT Courseware 5
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"Metal Corrosion and Protection" Metal and Metal Materials PPT Courseware
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"Spatial Structure within Rural and Urban Areas" Rural and Urban PPT
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"Comprehensive calculation and judgment about pressure and buoyancy" Buoyancy PPT
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"Making the Tree of Friendship Evergreen" PPT
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