Abstract: The present disclosure provides a display device and a display method. The display device includes: a memory for storing at least one pre-stored image; and a controller for: obtaining first and second target images according to the at least one pre-stored image; and controlling a display module, according to a first control instruction, to display the second target image and hide a display of at least one first sub-region in a first region in a frame displayed after switching from the first target image to the second target image. A size of the first target image is different from that of the second target image, and/or a position of the first target image in a display picture is different from that of the second target image. The first region represents a region within an outer contour of the first target image and not overlapping with the second target image.

Abstract: The application relates to a robot machining system and control method for ultrasonic surface rolling process of an aircraft engine blade. The robot machining system includes: a robot, to which an ultrasonic surface rolling process device is fixed, the robot drives the ultrasonic surface rolling process device to move; a base provided with a spindle turntable and a three-dimensional mobile lifting device, the spindle turntable being provided with a rotatable blade clamp, and a flexible follow-up support head being fixed to the three-dimensional mobile lifting device; and a control system, which is in electrical connection or communication connection with the robot, the spindle turntable and the three-dimensional mobile lifting device, respectively.