Abstract : the method and circuits of four - electrod - half bridge technique for the measurement of conductivity and permittivity of fermentation liquid are presented 文摘:提出了用替代网络四电极半桥技术测量发酵液的电导率和电容率的方法和电路。
Waveguide type dielectric resonators - general information and test conditions - measurement method of complex relative permittivity for dielectric resonator materials at microwave frequency 波导型介质谐振器.通用信息和试验条件.微波频段的介质谐振器材料的复合相对电容率测量方法
Waveguide type dielectric resonators - part 1 - 3 : general information and test conditions - measurement method of complex relative permittivity for dielectric resonator materials at microwave frequency 波导型介质谐振器.第1 - 3部分:通用信息和试验条件.微波频段的介质谐振器材料的复合相对电容率测量方法
Waveguide type dielectric resonators - part 1 - 3 : general information and test conditions - measurement method of complex relative permittivity for dielectric resonator materials at microwave frequency 波导型电介质谐振器.第1 - 3部分:一般信息和试验条件.在微波频率下电介质谐振器材料用复合式相关电容率的测量方法
Waveguide type dielectric resonators - part 1 - 4 : general information and test conditions - measurement method of complex relative permittivity for dielectric resonator materials at millimeter - wave frequency 波导型电介质谐振器.第1 - 4部分:一般信息和试验条件.在毫米波频率下电介质谐振器材料用复合式相关电容率的测量方法
Two parameters quantify the extent of these responses in a material : electrical permittivity , , or how much its electrons respond to an electric field , and magnetic permeability , , the electrons ' degree of response to a magnetic field 在材料中，这两种反应的程度可以由两个参数加以定量描述：代表电子对电场反应程度的电容率，以及代表电子对磁场反应程度的磁导率。
Insulating and sheathing materials of electric and optical cables - common test methods - part 5 - 1 : methods specific to filling compounds - drop - point - separation of oil - lower temperature brittleness - total acid number - absence of corrosive compo 电缆和光缆用绝缘和护套材料.通用试验方法.第5 - 1部分:填充复合物的专用方法.滴点.油分离.较低温脆性.总酸值.无腐蚀性成分. 23 ?时的电容率. 23 ?和100 ?时的直流电阻率
When frequency much higher than cutoff , using classical formulation method it is to know that tunnel wall wet make attenuation of electromagnetic wave increase in rectangular tunnel and make attenuation of other electromagnetic wave mode increase but te mode with tunnel wall permittivity 当频率远高于截止频率时，利用传统公式法可知：矩形隧道中隧道壁湿润引起衰减增大；圆形隧道中e模式衰减率因电容率的增大而减小，其他各模式则因电容率的增大而增大。
Insulating and sheathing materials of electric and optical fibre cables - common test methods - methods specific to filling compounds - drop point - separation of oil - lower temperature brittleness - total acid number - absence of corrosive components - permittivity at 23 c - d . c . resistivity at 23 c and 100 c 电缆的绝缘和护套材料.通用试验方法.填充复合物的专用方法.滴点.油分离.低温脆性.总酸值.无腐蚀性成分. 23时的电容率. 23和100时的直流电阻率
During the accelerated thermal aging and ultraviolet radiation aging of pmma which is used as the core materials of fiber in pof , it was found that the relative permittivity of pmma decreased significantly to approximately equal to its square refractive index 摘要实验中观察到用作塑料光纤纤芯材料的纯有机玻璃（聚甲基丙烯酸甲酯）在加速热老化和紫外老化过程中其相对电容率急剧下降至大约等于其折射率的平方，即有机玻璃由极性聚合物变为非极性聚合物（ “全去偶极子极化”现象） 。
