Its essential function is the perception of movement at the joint between the second antennal segment and the flagellum. 它的基本功能是感知触角第二节和鞭节之间的关节运动。
Metal surfaces form a passie oxide film, and with joint motion this film is repeatedly remoed and reformed, with gradual roughening of the surface. 金属表面可形成一层钝性氧化膜，该膜随着关节运动而反复剥落和形成，使表面逐渐变粗糙。
