工程材料英语

1、Magnetic componentsIn the lower magnetic field is magnetized to succeed is strong magnetic, but after the removal of the magnetic field its magnetic will disappear.Iron , Fe-Si alloy (Silicon steel) , Ni-Fe alloy , Mn-Zn ferrite and elseBelt coreIron coreIn a magnetic field magnetic materials is mag

2、netized, when the removal of the magnetic field the magnetic properties of a material will be reserved for a long time.Maximum magnetic energy (BH)max is (BH)max160kJ/ m3 its called high-energy permanent magnet materials, if the (BH)max between 32 and 80kJ/ m3 its called neutral-energy permanent mag

3、net materials.Permanent magnet motorDouble-sided permanent magnet suckerelectric generatorMagnetic coupling include magneto- opticl Tape recorder with a hard layer of small particles of magnetic materials. Recording, dynamic microphone into the sound changes in the strength of the current, this curr

4、ent through the recording head, resulting in changes in the strength of the magnetic field. Tape across the head, the tape on the strength of the small particles are magnetized differently, so a series of recorded information on magnetic variation.the fifth generation of chinas U.S. F-22 fighter jetsU.S. F-117 fighter jetsRussias newest fighter MiG -35The working mechanism of microwave weapons is based on microwave and irradiated molecular inte