Laser heat is used to amplify a large, weak magnetic field to record a bit.

激光的热量用来放大一个大面积脆弱的磁区域，来记录一位。

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Realtime monitoring and control system for thousand volts class ALP magnetic starter which core is MCS-51 series 80C31 8-bit single chip microcontroller is described here.

阐述了以MCS-51系列80C31八位单片机为核心构成的千伏级隔爆型磁力起动器实时监测控制系统。

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Our products include: magnetic drill, threading machine, hollow bit and rail drill.

经营产品为：磁力钻，攻丝机，空心钻头及钢轨钻头。

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Using the smallest object available for engineering data storage devices - single atoms - the same team of IBM researchers who made this movie also recently created the world's smallest magnetic bit.

ENGADGET: Extreme closeup! IBM makes 'world's smallest movie' using atoms (video)

They were the first to answer the question of how many atoms it takes to reliably store one bit of magnetic information: 12.

ENGADGET: Extreme closeup! IBM makes 'world's smallest movie' using atoms (video)

More baffling, at least to physicists, is that sometimes a bit of the plasma manages to break through the magnetic barrier and get inside the magnetosphere.

ECONOMIST: Hot stuff