dipolar hypothesis偶极: dipole说: try to persuade两极说: dipole hypothesis偶极: dipole◇偶极电位 dipole potential; 偶极辐射 dipole radiation; 偶极天线 [电磁] doublet antenna; dipole antenna; doublet; dipole; halfwave dipole离子栅极说: ion grid theory下载手机词典可随时随地查词查翻译