permittivity of vacuum
[电信英汉词典]
permittivity of vacuumn.真空介电常数
是什么意思,permittivity of vacuum的解释,permittivity of vacuum的翻译
[物理学英汉词典] permittivity of vacuum
permittivity of vacuum
[电信英汉词典]
permittivity of vacuum是什么意思,permittivity of vacuum的解释,permittivity of vacuum的翻译
[物理学英汉词典] permittivity of vacuum