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Mechanical model 3D printing technology craft clock science principle youth handmade ornaments
- Model #: WD-F3121
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Model mechanical clock principle escapement structure pendulum clock 3D printing teaching model technology technology
- Model #: WD-F3478
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55pcs Colorful Mixed Plastic Gear Gearbox DIY Child Kid Toy Ship Car Boat Plane Robot Air Craft RC Model DIY Repair Toolkit
- Model #: ZXH-H9433
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Speed device model crafts 3D printing car Torsen self-locking differential teaching demonstration equipment
- Model #: WD-F3078
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Mechanical model 3D printing escapement structure principle device spring power gear transmission teaching model
- Model #: WD-F3119
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Perpetual motion machine model ball cycle handmade small maker
- Model #: WD-F3462
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Gear transmission mechanical model spring power device 3D printing rotating escapement structure decompression toy
- Model #: WD-F3265
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Embossing machine sewing operating clothes 3 virtual mold protective clothing wireless edge banding outer mouth pull
- Model #: WD-F8280
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