Rec. ITU-R S.580-61RECOMMENDATION ITU-R S.580-6Radiation diagrams for u as design objectives for antennasof earth stations operating with geostationary satellites(Question IT
Book Two ---Unit FourI. Rewrite the each ntence with word or phra in brackets, keeping the same meaning. The first part has been written for you. (每题1分)1. The most interesting part of this tour is