[地物] magnetograph
... 地磁要素 geomagnetic element 地磁仪 magnetograph 地磁仪器 geomagnetic instrument ...
ground magnetometer
地磁仪 geomagnetometer; ground magnetometer; magnetometer 克由地磁仪 kew magnetometer .
geomagnetometer
... 型 mould; model 地磁仪 geomagnetometer 航空地磁仪 aeromagnetometer; airborne magnetometer ...