磁法调查

magnetic separator with the material carrier in the form of trays

magnetic striping machine【电影】

magnetic iron ore【矿】;magnetite【矿】;octahedral iron ore【矿】

magnetic remanence【电磁】;remanence【电磁】

magnetic extractor

magnetic head with more than one gap

magnetic corrosion-resistant filter

crossed electric-magnetic fields mass spectrometer