dielectricityn.介电性dielectricn.电介质；绝缘体adj.非传导性的dielectric coated waveuide介质膜波导管dielectric characteristics介电特性dielectric relaxation time介电弛豫时间dielectric type hygrometer介电湿度计dielectric loss measurment介损测量Dielectric physic-optics介质物理光学dielectric hysteresis loss电介质滞后损失dielectric strength tester耐压测试器dielectric function models介电函数模型dielectrically isolated IC介质绝缘集成电路