摘要 |
To reduce the thickness and improve the operability. It includes a first housing and a second housing placed on top of each other, and connecting means to connect the first and second housings, the connecting means being interposed between the first and second housings, wherein the connecting means engages with the first housing so as to be slidable in at least one direction with respect to the first housing, and engages with the second housing so as to be rotatable with respect to the second housing.
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