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与"concave grating"相近的词条

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• concave-convex
• concave curved bone rasp
• concave cylindrical lens
• concave diffraction grating
• concave face
• concave grating
• concave horopter
• concave leaf
• concave lens
• concave mirror
• concave mirror reflector
• concave nirror
• concave plasmolysis
• concave preset lens
• Concave shape
• concave sheath

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