... 固定电感器 fixed inductor 固定电话 hand-free telephone 固定电极法 {工} fixed-electrode method ...
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I receive handset calls with the hand free telephone, so I pay little for receiving calls.
我通过固定电话接手机来电，几乎所有的通话都不付费。
IntroductionIn the communication systems, echo and noise will seriously affect speech communication quality, such as IP telephone, videophone and hand-free digital cell phone systems etc.
引言在通信系统中，例如IP电话、可视电话及免提数字蜂窝电话系统中，回声和噪声会严重影响通信质量。
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