Дүүжин | 292 бүтээгдэхүүн

Creative wooden base Z-shaped N-shaped Newton collision ball energy conservation model balance ball inertia swing bumper ball ornaments

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Newton Pendulum Ball Perpetual Motion Instrument Magnetic Levitation Small Ornaments Home Study Office Desktop Creative Decorative Crafts

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usb Battery Dual-purpose Permanent Motion Instrument Newton Pendulum Creative Dolphin Rotating Electromagnetic Swing Device Office Decoration Ornaments

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New Newton Pendulum Ball Collision Ball Metal Ball Semi-handmade Factory Direct Sales

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7 Balls, Wood Balance Balls, Bumper Balls, Desk Decoration, Newton Pendulum Physical Laws, Display Swing Balls