透とう磁じ率りつ

noun

magnetic permeability

Technical term in physics and engineering; refers to the degree of magnetization of a material in response to an applied magnetic field.

• 鉄てつは透とう磁じ率りつが高たかいため、磁じ気き回かい路ろによく使つかわれる。

  Iron is often used in magnetic circuits because of its high magnetic permeability.