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"Nitrogen Cycle" Nature and Transformation of Matter PPT (Lesson 1 Nitrogen Cycle in Nature Nitrogen and Nitrogen Oxides)
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2023-09-25 17:34:00
"Nitrogen Cycle" Nature and Transformation of Matter PPT (Lesson 3: The Impact of Nitric Acid Human Activities on the Nitrogen Cycle and the Environment)
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2023-09-25 17:34:00
Tribute to the extraordinary work of ordinary workers. International Labor Day, also known as "May 1 International Labor Day" and "International Demonstration Day", is a national holiday in more than 80 countries in the world. It is set on May 1st every y
下载 394 次
2024-07-05 16:04:17
"Atomic Structure and Periodic Table of Elements" Periodic Law of Material Structure PPT (Lesson 2 Atomic Structure and Properties of Elements)
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2023-09-25 17:34:11
"Atomic Structure and Periodic Table of Elements" Periodic Law of Material Structure PPT (Lesson 2 Atomic Structure and Properties of Elements)
下载 327 次
2023-09-25 17:34:11
"Atomic Structure and the Periodic Table of Elements" PPT of the Periodic Law of the Elements in the Structure of Matter (Atomic Structure and the Properties of Elements in the 2nd Class)
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2021-12-24 14:10:07
"Atomic Structure and the Periodic Table of Elements" PPT of the Periodic Law of the Elements in the Structure of Matter (Atomic Structure and the Properties of Elements in the 2nd Class)
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2021-12-24 14:10:07
"Transformation of Sulfur" Nature and Transformation of Matter PPT (Lesson 1 Sulfur elements in different valence states in nature and the transformations between them)
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2023-09-25 17:34:01
"Transformation of Sulfur" Nature and Transformation of Matter PPT (Lesson 1 Sulfur elements in different valence states in nature and the transformations between them)
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2023-09-25 17:34:01
"Micro Project Iodine Extraction from Kelp and Bromine Extraction from Seawater - Experience the Practical Application of the Gradient Law of Element Properties" Periodic Law of Atomic Structure Elements PPT
下载 837 次
2023-09-25 17:33:56
"Micro Project Iodine Extraction from Kelp and Bromine Extraction from Seawater - Experience the Practical Application of the Gradient Law of Element Properties" Periodic Law of Atomic Structure Elements PPT
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2023-09-25 17:33:56
"Mendel's Pea Hybrid Experiment (2)" Discovery of Genetic Factors PPT (Cross Experiment Process and Explanation of Two Pairs of Relative Characters in Lesson 1)
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2023-09-20 15:21:38
"Mendel's Pea Hybrid Experiment (2)" Discovery of Genetic Factors PPT (Cross Experiment Process and Explanation of Two Pairs of Relative Characters in Lesson 1)
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2023-09-20 15:21:38
"Mendel's Pea Hybrid Experiment (1)" Discovery of Genetic Factors PPT (Cross Experiment Process and Explanation of a Pair of Relative Characters in Lesson 1)
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2023-09-20 15:21:38
"Mendel's Pea Hybrid Experiment (1)" Discovery of Genetic Factors PPT (Cross Experiment Process and Explanation of a Pair of Relative Characters in Lesson 1)
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2023-09-20 15:21:38
"The Nature of Seawater and the Impact of its Movement on Human Activities" Physical Geographic Elements and Phenomenon PPT (The Movement of Seawater and its Impact on Human Activities in the Second Lesson)
下载 589 次
2023-09-25 18:24:40
"The Nature of Seawater and the Impact of its Movement on Human Activities" Physical Geographic Elements and Phenomenon PPT (The Movement of Seawater and its Impact on Human Activities in the Second Lesson)
下载 589 次
2023-09-25 18:24:40
Tribute to the extraordinary work of ordinary workers. International Labor Day, also known as "May 1 International Labor Day" and "International Demonstration Day", is a national holiday in more than 80 countries in the world. It is set on May 1st every y
下载 394 次
2024-07-05 16:04:17
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