generalized Lagrange invariant
广义拉格朗日不变量

• edging operation
• edging stone
• edg response curve
• editing machine
• edpidote
• educt
• eduction
• e(extraordinary)_ray
• effect
• effective aperture
• effective aperture of obejctive
• effective bandwith
• effective diameter
• effective diaphragm
• effectived range
• effective f-number
• effective index method
• effective line width
• effectiveness
• effective numberical aperture
• effective phase difference
• effective stop
• effective surface
• effective value
• effective wave length