The mathematic model of the top magnetic shaker controller was studied from the electro-magnetic theory and mechanics theory.

从电磁学理论和力学理论首次研究了顶部振打器的数学模型，分析了振打锤运动的三个阶段。

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According to the lately force magnetic theory, tiny Holl probe was used to practice magnetic flux leakage (MFL) testing on R3 middle-carbon steel.

根据最新力磁理论，使用微型霍尔探头对R3碳钢进行漏磁检测。

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The basic patent for the theory of magnetic recording dates back to 1886.

用磁录音这一理论的最初专利始于1886年。

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Each of those dots, in theory, could hold a distinct magnetic state, representing a one or a zero.

FORBES: Nanotech

The result is not a total surprise, since less-precise measurements published three years ago suggested that antimuons (which ought, if theory is correct, to have the same magnetic moments as muons) are similarly anomalous.

ECONOMIST: Particle physics

Dr Ardavan's theory describes how the gyrating star generates an intense magnetic field, which polarises the ionised gas or plasma surrounding it.

ECONOMIST: Physics