近场距离

near field pattern near of kin transaction of near delivery near ratio of distance distance of distinct vision average distance of freight carried at this distance of time average distance of passenger travel field of colour coding depth of field near field pattern of laser near field near-field distance and near(vision) near distance electrooptometer near interpupillary distance interference near-field pattern near-field backscatter near field Casegrainian antenna near-field resolution reactive near-field region