所属栏目:溶液过程理论与电磁处理技术
MagnetismhadbeenutilizedsinceancestralChineseinventingthecompass.Now,itplaysaveryimportantparteitherinourlifeorinscienceandtechnology.Forexample,radioandtelevisioncannotworkwithoutmagneticfield;peoplecuresomediseases,changetheactivityofyeastswithmagneticf ......(本文共 7633 字 , 4 张图) [阅读本文] >>