Definitions for "EFL"
Equivalent Focal Length. The focal length of an infinitely thin lens having the same paraxial imaging properties as a thick lens or multiple-element system.
EFFECTIVE FOCAL LENGTH. See FOCAL LENGTH.
Effective Focal Length. The distance from the principal point to the focal point.
nglish as a oreign anguage. Originally this term referred to non-native speakers who are learning English language in a non-native English speaking environment. For example, a non-native English speaker learning English in Taiwan.
English as a Foreign Language
Keywords:  edwards, laboratory, field
Edwards Field Laboratory
The foundation for Information on Economic Research in Lund (To of the page)
Keywords:  emitter, logic, follower
Emitter Follower Logic
External financing limit
External Financial Limit