一设于壳座内并伸露出壳座外的第一接触件，其可电连接于外电源的火线；
The first pole of the circuit board, the first conductive member and the first contact member are electrically connected with each other.
一设于壳座内并伸露出壳座外的第一接触件，其可电连接于外电源的火线；
The first pole of the circuit board, the first conductive member and the first contact member are electrically connected with each other.
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