collineatory transformation
直射变换

• ekonal
• Ektar lens
• elastance
• elastic
• elastic bush
• elastic deformation
• elastic fatique
• elastic hysteresis
• elasticity
• elastic limit
• elastic modulus
• elastic oscillation
• elastic scattering
• elastic scattering amplitude
• elastic-solid theory
• elastic spacer
• elastic standing wave
• elastic wave
• elastivity
• elastomer
• elastooptic coefficeint
• elbow
• elbow refractor
• elbow telescope
• elctro-optical waveguide beam detector