| 摘要 |
A device comprises: a cylindrical first main body, having a bottom face, an inner side face, and an outer side face, said device further comprising at least one or more electromagnetic emission ports which are disposed on the inner side face of the first main body, and at least one or more disinfectant discharge ports which are disposed on the bottom face and/or the inner side face of the first main body; an electromagnetic emission source; and a disinfectant supply source. |
