Electromagneticshieldingwindowoftwodimensionalareaisbetweentheisolationofmetal,tocontroltheelectricfield,magneticfieldandtheelectromagneticw***ebyaareatoanotherareainductionandradiation.Specifictell,istouseshieldswillyuanparts,circuit,assemblies,cableortheentiresystemofinterferencesourcesurrounded,preventinterferencetospreadoutsidetheelectromagneticfield;Useashieldedwillreceivecircuit,equipmentorsystemsurroundedandtopreventtheirgettheoutsidetheinfluenceoftheelectromagneticfield.)