There is disclosed an improved bib retaining device. When the assignment of the PUSCH is changed to another UE, the eNB derives the antenna weight, on the basis of a past uplink reference signal transmitted from the UE in a past time zone earlier than the PUSCH resource and in a frequency band overlapping with the frequency band of the PDSCH resource. An optically conjugate point of an object surface is formed in the light beam path of the immersion optical system. The correction data file is transferred to the NC controllers 91-9n prior to the NC machine tools 21-2n processing the work. A chip select pad and a chip select pad are wire bonded to second stitches formed in a line along a side adjacent to a side of the chip select pad.