- Clay model DIY
- Clay model DIY
- {{=it["视频提供者"]}}：中国科协青少年科技中心
- {{=it["视频提供者"]}}：
- {{=it["视频有效期"]}}：长期有效
- {{=it["视频有效期"]}}：Children and Youth Science Center of CAST
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- How does the train turn How does the train turn {{=it["观看"]}}
- Naughty air Naughty air {{=it["观看"]}}
- Climate wind tunnel Climate wind tunnel {{=it["观看"]}}
- Clay model DIY Clay model DIY {{=it["观看"]}}
- Painting of railway vehicle based on traditional culture Painting of railway vehicle based on traditional culture {{=it["观看"]}}
{{=it["京公网安备11010802032953号"]}}