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"Success" PPT courseware
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"Success" PPT courseware
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"Growth" PPT courseware
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"Achievements of Science and Technology" Science, Technology, Culture and Social Life PPT Courseware
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"Achievements of Science and Technology II" Science and Technology Education and Culture PPT Courseware 3
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"Diversity of Iron" Properties and Transformation of Matter PPT (Transformation between Iron and Its Compounds in Lesson 2)
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2023-09-25 17:34:01
"Diversity of Iron" PPT courseware on the properties and transformation of matter (the transformation relationship between iron and its compounds in Lesson 3)
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"The Achievements of Science and Technology 1" Science and Technology Education and Culture PPT Courseware 2
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"The Achievements of Science and Technology 1" Science and Technology Education and Culture PPT Courseware 3
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"Chemical Synthetic Materials" Modern Life and Chemistry PPT Courseware 4
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"Spinning Toys" PPT courseware
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"Transformation of Sulfur" Nature and Transformation of Substances PPT (Second Lesson: Sulfuric Acid Rain and Its Prevention and Control)
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"Chemical Synthetic Materials" Chemistry and Social Life PPT Courseware 2
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"The Achievements of Science and Technology 1" Science and Technology Education and Culture PPT Courseware 4
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