核子旋进式磁力仪是一种新型的磁力仪,借核子在未知磁场中旋进的频率来测定磁场强度。它既可设计得适用于实验室中测定强磁场,又可设计来供地磁场的绝对测量或供磁去勘探之用。其恃点是不像其它地磁仪那样娇嫩,对定向的要求也不甚严格。本文从基本原理、发展经过、到构造的要点部作了简明的叙述。 Nuclear precession magnetometer is a new type of magnetometer, by nuclear in the unknown magnetic field precession frequency to determine the magnetic field strength. It can be designed to measure strong magnetic fields in the laboratory, but also designed for absolute measurement of the Earth’s magnetic field or for magnetic exploration. Its key point is not as delicate as other geomagnetic instruments, the requirements of the orientation is not very strict. This article from the basic principles, development, to the structure of the key points made a concise description.