acousto-optic modulator
声光调制器

• flat CRTs
• flat-field lens
• flat-field objective
• flat inclined mirror
• flat interferometer
• flat key
• flat lapping block
• flat-layer powder camera
• flat machine
• flat mirrors
• flatncess of field
• flatness of image plane
• flatness testers
• flat pack
• flat plate
• flat polisher
• flat reflector
• flat-roof mirror
• flat saddle key
• flat spring
• flat spring hinge
• flat surface
• flattened field
• flattener
• flattening lens