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Physics and Optics Experiments Double-concave cylindrical lens magnetic attraction teaching demonstration blackboard
Specifications:
- Subject: Physics
- physical optics experiment: physics optics
- Origin: CN(Origin)
- optics physics: lens optics physics
- Model Number: Biconcave lens
- Brand Name: HOGNSIGN
- Free shipping
- 100 days returns
- Low prices
- 5 million products