Such effects are obiously adanced well beyond any signal type which can be stopped by a foil beanie. 这样的影响明显是远远领先于任何能被屏蔽帽阻止的信号形式。
A device that converts data from one form into another,as from one form usable in data processing to another form usable in telephonic transmission. 调制解调器将信号由一种形式转换成另一种形式的装置，如在电话传输中由一种可用形式以信号形式转换成另一种可用形式。
