Abstract: Provided in the present application are an electronic device and a control method for the electronic device. A shell in the electronic device is provided with a first face and a second face that are arranged opposite each other and a first side portion and a second side portion that are arranged opposite each other; a guide apparatus is received in the shell, and the guide apparatus can drive the second side portion to extend or retract; and a flexible display screen is arranged at an outer surface of the shell, and the side, located at the second face, of the flexible display screen is provided with an opening, and when the guide apparatus drives the second side portion to extent, the flexible display screen is split from the opening, and the flexible display screen moves from the second face to the first face along the guide apparatus.

Abstract: A method, system and device for programmed cell freezing is disclosed. The method includes: S1, acquiring a cooling rate k and a temperature distribution function T=a×h2+b×h+c of a heat preservation chamber containing liquid nitrogen; S2, controlling a cell preservation tube to lower in the chamber at a speed of v=(k-b)/2ah, and acquiring temperatures T1 and T2 inside and outside the tube at a same time and at a same height in real time during the lowering of the tube; S3, determining whether a difference ?t between T1 and T2 exceeds a preset temperature difference threshold, if yes, proceeding to S4, and if no, proceeding to S2 until the tube reaches a position corresponding to a preset temperature T0; and S4, controlling the cell preservation tube to stop until the difference ?t between T1 and T2 is less than or equal to the temperature difference threshold, and continuing S2.

Abstract: Provided in the present application are an electronic device and a control method for the electronic device. A shell in the electronic device is provided with a first face and a second face that are arranged opposite each other and a first side portion and a second side portion that are arranged opposite each other; a guide apparatus is received in the shell, and the guide apparatus can drive the second side portion to extend or retract; and a flexible display screen is arranged at an outer surface of the shell, and the side, located at the second face, of the flexible display screen is provided with an opening, and when the guide apparatus drives the second side portion to extent, the flexible display screen is split from the opening, and the flexible display screen moves from the second face to the first face along the guide apparatus.