介绍了G856质子旋进磁力仪的工作原理。

The working principles of a Proton Precession Magnetometer G856 are introduced.

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根据“地震及前兆数字观测技术规范”电磁部分的要求，在地磁台站建筑施工过程中，需用质子旋进磁力仪在现场对建筑物及周围磁场背景进行监测。

According to the require of the technique criterion, in the building process of geomagnetic station, it have to use rotation magnetometer to monitor the background of structure and site.

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同时，磁法也由于铯磁力仪和质子旋进式磁力仪的发明而得以改进。

Meanwhile, these methods have been modified and improved by newly developed caesium magnetometers and by proton-procession magnetometers.

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同时，磁法也由于铯磁力仪和质子旋进式磁力仪的发明而得以改进。

Meanwhile, these methods have been modified and improved by newly developed caesium magnetometers and by proton-procession magnetometers.

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