Abstract: Provided is a method for information prompt, including: receiving an audio/video call invitation, and displaying, in the case that the account does not accept the audio/video call invitation, a first state prompt at the position of a session to which a target audio/video call belongs on a session list page of an account logged on a terminal. The first state prompt indicates that there is an unjoined audio/video call which is in progress.

Abstract: Disclosed is a turbine rotor device for a gas turbine, the turbine rotor device comprising a turbine rotor body, and a pre-stressed fiber-wound layer, wherein the pre-stressed fiber-wound layer is wound on the periphery of the turbine rotor body to exert a predetermined pre-loading force on the turbine rotor body. Additionally, a rotor, and a gas turbine and a turbine engine having the turbine rotor device are also provided.

Abstract: A radiator clip structure and comprising skewed slots on the back of the radiator, locking slots for receiving a tool for mounting and dismounting the structure above the skewed slots and a main part of the radiator clip further comprising a u-shaped panel with a long edge and a short edge, and a notch between the long edge of the main part of the radiator clip and the bottom edge of the u-shaped panel. A tool used for mounting and dismounting the radiator clip for the above mentioned structure, comprising a pressing block with a concave surface, a convex spot, a handle, and a concave part on the end of the said handle.

Abstract: Disclosed is a turbine rotor device for a gas turbine, the turbine rotor device comprising a turbine rotor body, and a pre-stressed fiber-wound layer, wherein the pre-stressed fiber-wound layer is wound on the periphery of the turbine rotor body to exert a predetermined pre-loading force on the turbine rotor body. Additionally, a rotor, and a gas turbine and a turbine engine having the turbine rotor device are also provided.

Abstract: A zoning closed-die extruding device comprises a closed female die and a male die. which is disposed in a longitudinal direction and configured to be mated with a closed cavity of the closed female die to extrude a blank. The male die comprises an extruding shaft portion and a stamp-extruding head portion, which is connected with the extruding shaft portion and disposed below the extruding shaft portion. A cross-sectional area of the stamp-extruding head portion perpendicular to a longitudinal axis of the closed female die is smaller than that of the extruding shaft portion perpendicular to the longitudinal axis of the closed female die. The male die is configured to rotate about the longitudinal axis of the closed female die so that the blank is sequentially and zonally deformed by the stamp-extruding head portion inside the closed cavity of the closed female die.

Abstract: The present invention relates to rapid prototyping technology and advances a new forming process of extrusion and jetting without thermal liquefaction. The present invention greatly simplifies the forming system, improves the quality and reduces the cost, protects many special materials, especially the dear nature of bioactive materials to adapt to making the tissue engineering scaffold in bioengineering.