单词	spherical end
释义	spherical end 球形端
随便看	optical reflector optical REFLECTORS optical reflectror optical reflex view finder optical refracting-members optical refraction Optical refractive index optical refractometry and reflectometry optical regeneration optical regenerative repeater optical regenerator section optical region optical register optical registering optical registration Optical Rejection Ratio optical relay optical relays Optical Relay Tube optical relief model optical remote control equipment optical remote sensing Optical remote sensing images optical remote sensing imaging optical remote sensing of atmosphere