Ophthalmic knife test drum
眼科用刀片测试鼓

• fan filter
• fan geometry mixing laser
• fan in
• fanning beam
• fanning strip
• fan out
• fan-shaped laser beam
• fantascope
• fan test object
• farad
• Faraday cage
• Faraday cell faraday configuration
• Faraday constant
• faraday dark space
• Faraday driver
• Faraday effect
• Faraday isolator
• Faraday rotation
• Faraday shutter
• faraday's law
• farady, pockel cells
• far field
• far field approximation
• far field construction
• far field diffraction