轮轴、斜面

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Age: 10
Level: 3
Language: Chinese (zh)
ID: 1647401
16/11/2021
Country code: MY
Country: Malaysia
School subject: 科学 (1061731)
Main content: 选对的答案 (1620764)

科学原理( 省力的方法 )

Other contents: Click to the correct answer

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轮轴、斜面

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