A system for distinguishing between any one of a plurality of antennas in a multiple-input-multiple-output system having an augmented number of antennas is provided herein. A retention member for the object to be processed 18 that retains the object to be processed 17 and a rear shielding plate 15 that prevents the rear surface of the object to be processed from becoming contaminated by excessive fluid flow are mechanically separated. The CPU is configured to execute one or more instructions of the executable instructions at the same time. As compared to SPR, the CPR-type devices offer an increased flexibility over wide ranges of wavelengths, bandwidths, and device dimensions. A transition portion is disposed along the axis of the male part between a radially largest portion of the radially and axially supporting and positioning portion and the externally threaded portion. The image processing module analyzes at least one of the top view image and the side view image by using at least one image processing procedure and at least one analysis rule, so as to generate at least one feature data corresponding to appearance features of the plant, and records the at least one feature data in the storage unit.