它克服了铁底松动、接触不良等问题。
Practice showed that this design was workable to overcome the loose contact problems.
检查相应控制回路是否断线或接触不良。
Check whether the control circuit is disconnected or contacted well.
电源线是否导通,是否与插座接触不良。
Power line whether breakover, whether with plug bad contact.
接触不良有时会造成断电。
这里好像有点接触不良。
这里好像有点接触不良。
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