constructive interference
相长干涉

• Hooker's joint
• hook tooth
• hook-up wire
• hook-up wire horzon
• horizon autonavigator
• horizon camera
• horizon glass
• horizon grange
• horizon seeker
• horizon sensor
• horizontal
• horizontal adjustemt
• horizontal alighnment
• horizontal angle
• horizontal axis
• horizontal base
• horizontal chromatography
• horizontal circle
• horizontal clamping screw
• horizontal comparator
• horizontal component
• horizontal device control
• horizontal focus
• horizontal hunting
• horizontal length measuring machine