プロトン磁じ力りょく計けいじ字FuriganaMeanings1nounproton magnetometerA scientific instrument that measures magnetic fields using the precession of protons.プロトン磁じ力りょく計けいは地ち磁じ気きの測そく定ていに使つかわれる。A proton magnetometer is used to measure geomagnetism.
