1)true conductivity,真电导率2)True formation conductivity,地层真电导率3)permeability of vacuum,真空磁导率4)permeability of vacuum,真空导磁率5)True resistivity,真电阻率6)electro-conductivity,导电性，电导率，导电率
用法例句
Measurement of magnetic field force and permeability of vacuum;
载流导体的磁场力及真空磁导率的巧测量
Measuring alternating magnetic field and permeability of vacuum by oscillograph;
用示波器测交变磁场及真空磁导率
The theory and method of measuring the magnetic field force and permeability of vacuum around conductors with current by an electronic balance are introduced.
