bipoledipole aerialdoublet, dipoleelectric dipoleelectric doubletelelctric doubletsource and sink doublet偶极: dipole子: son偶极,偶极子: dipole半波偶极子: half wave dipole; half-wave doublet; halfwavedipole表面偶极子: surface dipole下载手机词典可随时随地查词查翻译