A double-effect thermoelectric cooling apparatus is described. The apparatus comprises a housing and an adjustable actuator, wherein the housing has a cavity which contains a ball ramp plate and a sleeve nut to prevent their rotation. The intermingling of the guest and host includes a physical tangling, whether it also comprises crosslinking by primary bonding there-between. Lane boundary lines are recognized from detection straight lines, whose direction and the intersection x determined based on vote results.