使用高灵敏度的G856、dtz2型核子旋进式磁力仪，对乌鲁木齐地磁台199个测点的磁场梯度进行了复测。
The magnetic field gradient is surveyed again at 199 sites in Urumqi geomagnetic station using high sensitivity nuclear procession magnetometers of Type G856 and DTZ 2.
使用高灵敏度的G856、dtz2型核子旋进式磁力仪，对乌鲁木齐地磁台199个测点的磁场梯度进行了复测。
The magnetic field gradient is surveyed again at 199 sites in Urumqi geomagnetic station using high sensitivity nuclear procession magnetometers of Type G856 and DTZ 2.
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