the direction and the direction of the beaver. beaver is the old skate board

摘要

according to the invention, the direction of the beaver and beaver in the direction of the furniture and equipment on the skate board is more detailed is the director of the cancer is not the prescribed angle of the slope of the plate, so that the majority of the direction of the ubd80ucc29ud568uc73cub85cuc368... the the board or the transfer device of the kind, the driver's foot skate board by the weight of the movement and distortion with the motivation to get the direction of the beaver and the direction of the device is equipped with a skate on the board.;in this research, on the base of the base; the bottom surface of the slope. the installation of the ball and the housing. the housing is fixed to the back of a fixed combination, and bearings. the bearing housing is received in the uc5b4ub9c1; to insert to the group call; the direction of the axis of the lower end in the form of a pair of roller. the roller; and the pair of the arm between the axis of the roller to be complete, including the characteristics, it is the direction for the special.