directional

  • directional antenna - 定向天線
  • directional beacon - 定向信標
  • directional broadcasting - 定向廣播
  • directional coupler - 定向藕合器
  • directional coupler, aperture copuling - 隙孔藕合式定向藕合器
  • directional coupler, directivity of - 定向藕合器之指向性
  • directional coupler, scattering matrix of - 定向藕合器之散射矩陣
  • directional coupler, T - T-型定向藕合器
  • directional coupler, two-hole - 雙孔定向藕合器
  • directional coupler, two-port - 雙埠定向藕合器
  • directional coupler, X - X-型第向藕合器
  • directional coupler, Y - Y-型定向藕合器
  • directional radio - 定向無線電(系統)
  • directional radio beacon - 定向無線電信標
  • directional radio radiation - 定向無線電發射
  • directional radio signal - 定向無線電信號
  • directional radio telegraphy - 定向無線電報學
  • directional receiver - 定向接收機
  • directional reception - 定向接收
  • directional transmitter - 定向發射機,(無線電)測向發射機
  • directional wireless - 定向無線電

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