The invention relates to a hot rolling mill, with at least one flatness measuring roller, pertaining to at least one rolling bed, arranged before andor after one of the stands, which influences the settings of at least one of the stands. A method of a Base Station for forming a virtual cell in a wireless communication system includes determining at least one beam among a plurality of beams through beam training with a terminal. The height of at least one complementary pair of fingers varies along the length of the interlocking finger pair. An electronic control circuit is linked to the drive mechanism for controlling the motor and producing pre-recorded songs among other things. Copper interconnects are then formed in the interconnect pattern etched in the insulating layer.