rotation-reflection axis
转动反射轴

• panoptic
• panoraimic telescope
• panorama
• panoramatic head
• panoramic camear
• panoramic infrared phto sytsem
• Panoramic lens
• panoramic paralllax stereogram
• panoramic phtography
• panoramic receiver
• panoramic sight
• panoramic view
• pantograph
• pantometer
• pantomorphism
• pantoscope
• pantoscopic camera
• papabola
• paper
• paper chromatography
• paper polishing
• paper tape
• paper tissue
• parabocone
• parabolic