Impedance Bond [电] 阻抗联结器 ; 阻抗轨隙连接器 ; 阻抗搭接 ; 阻抗结合
impedance bond transformer [电子] 阻抗联接变压器
ZB impedance bond 阻抗接续器
resonated impedance bond 谐振式阻抗联接变压器
According to the NTSB, which is investigating the crash, maintenance records show that an "impedance bond" for the track circuit where the accident occurred was replaced June 17.
CNN: NTSB says train detection system failed in days before D.C. crash
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