optically perfect reflector
理想反光器，理想反光镜

• carcase
• carcinotron
• card
• cardan
• cardan axis
• cardan shaft
• cardboard paper
• card image
• cardinal number
• cardinal point
• cardinal points
• cardinal series expansion
• cardinal stimulus
• cardioid condenser
• cardioid condeser
• cardon link
• card punch
• card reader
• carnauba wax
• car navigation systems
• carousel
• carpenter's square
• carriae
• carrier
• carrier concentration