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directional antenna [d(a)ɪ'rekʃənl æn'tenə]
radio.amat. 定向天线
space 定向天线
tech. 指向天线
directional antenna
: 40 phrases in 10 subjects
Air defense9
Automobiles2
Aviation4
Business1
Electronics4
Oil / petroleum2
Space7
Technology5
Telecommunications5
United Nations1