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随便看	dielectric loss factor [dielectric] loss index dielectric loss index dielectric loss test dielectric matching plate dielectric material dielectric materials dielectric materials and property dielectric materials/devices dielectric measurements dielectric medium dielectric mirror dielectric obstacle dielectric oil dielectric paper dielectric parameter dielectric periodic structure dielectric permitivity dielectric permittivity dielectric phase angle dielectric phase shifter dielectric plastic welder dielectric plastic welding dielectric polarization dielectric polarization and depolarization effects