Abstract: A shot blasting cabinet with adjustable impellers includes a cabinet, a plurality of impeller apparatuses, and a plurality of adjusting devices. A shot-blasting working line is defined between an inlet and an outlet of the cabinet. The impeller apparatuses are symmetrically disposed on upper and lower sides of the cabinet. Each impeller apparatus has a protective housing, a driving device, a pair of rotary plates, and a plurality of impeller blades. The driving device connects one of the rotary plates. The protective housing covers the pair of rotary plates and the impeller blades, and defines a shot-blasting exit surface. The shot-blasting exit surface communicates with an interior of the cabinet. The adjusting devices are used to adjust an angle and a distance of the shot-blasting exit surface relative to the shot-blasting working line.

Abstract: A navigation method includes steps of calculating a first coordinate of a first position; taking the first coordinate to be a center of a predetermined range and calculating a first map data within the predetermined range according to a zoom scale of a map scale; downloading the first map data from a map server; storing the first map data; using the first map data to render a first graphic user interface map corresponding to the first coordinate; and displaying the first graphic user interface map.