Proton magnetometer

（重定向自Proton precession magnetometer）

The proton magnetometer, also known as the proton precession magnetometer (PPM), uses the principle of Earth's field nuclear magnetic resonance (EFNMR) to measure very small variations in the Earth's magnetic field, allowing ferrous objects on land and at sea to be detected.

单词	Proton precession magnetometer
释义	Proton precession magnetometer 英语百科 Proton magnetometer （重定向自Proton precession magnetometer） The proton magnetometer, also known as the proton precession magnetometer (PPM), uses the principle of Earth's field nuclear magnetic resonance (EFNMR) to measure very small variations in the Earth's magnetic field, allowing ferrous objects on land and at sea to be detected.
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