Abstract: Disclosed is an electronic device, comprising: a camera module, which comprises a camera and a first connector, the first connector comprising first to M-th connecting contacts, wherein M is an integer; a display apparatus, which comprises a second connector, the second connector comprising first to N-th connecting pins, wherein N is an integer, and N?1; and a detection control circuit, which is connected to the second connector, and is configured to determine in response to the first to M-th connecting contacts being mounted onto a-th to (a+M?1)th connecting pins among the first to N-th connecting pins that the camera is mounted onto the display apparatus in a front-facing manner, and to determine in response to the M-th to first connecting contacts being mounted onto b-th to (b+M?1)th connecting pins among the first to N-th connecting pins that the camera is mounted onto the display apparatus in a rear-facing manner.

Abstract: The present disclosure provides a high-vanadium high-speed steel and preparation method therefor, and use thereof, which relate to the technical field of high-vanadium high-speed steel. The preparation method includes: smelting raw materials to form a melt; impacting the melt to a cooling platform to form a high-vanadium high-speed steel casting billet; and performing a spheroidizing annealing treatment and a quenching and tempering treatment, so as to obtain a resultant. The spheroidizing annealing treatment includes: heating the high-vanadium high-speed steel casting billet to 820-910° C.; holding for 2-4 h; then cooling down to 450-550° C. at a cooling rate larger than 40° C./h; and then air cooling to a room temperature.

Abstract: A multi-physical field measurement device for a metal solidification process and a housing and a measurement method thereof are provided. The device includes: a sealed housing provided with a light-through hole; a heater provided inside the housing and located behind the light-through hole along an X-ray; a diffraction detector used for receiving the X-ray which penetrates through a sample sheet and is scattered; a CMOS camera located behind the heater along the X-ray (11) and used for receiving a visible light signal which penetrates through the sample sheet; a silicon drift X-ray detector located at one side of the X-ray and used for receiving a fluorescent signal sent by interaction between the X-ray and the sample sheet; and an infrared thermal imager located at the other side of the X-ray and used for receiving an infrared signal sent by the sample sheet.

Abstract: A data reduction method and apparatus are provided to improve data reduction performance. In the method a storage device obtains a first service type of first data stored in a first logical unit. The storage device processes the first data based on a first data reduction manner that matches the first service type. The storage device obtains a second service type of second data stored in a second logical unit. The second service type is different from the first service type. The storage device processes the second data based on a second data reduction manner that matches the second service type. The first data reduction manner includes data compression and/or data deduplication. The second data reduction manner includes data compression and/or data deduplication. The first data reduction manner is different from the second data reduction manner.

Abstract: A multi-physical field measurement device for a metal solidification process and a housing and a measurement method thereof are provided. The device includes: a sealed housing provided with a light-through hole; a heater provided inside the housing and located behind the light-through hole along an X-ray; a diffraction detector used for receiving the X-ray which penetrates through a sample sheet and is scattered; a CMOS camera located behind the heater along the X-ray (11) and used for receiving a visible light signal which penetrates through the sample sheet; a silicon drift X-ray detector located at one side of the X-ray and used for receiving a fluorescent signal sent by interaction between the X-ray and the sample piece sheet; and an infrared thermal imager located at the other side of the X-ray and used for receiving an infrared signal sent by the sample sheet.

Abstract: A data reduction method and apparatus are provided, and relate to the computer field, to improve data reduction performance. The method includes: A storage device obtains a first service type of first data stored in a first logical unit (S301). The storage device processes the first data based on a first data reduction manner that matches the first service type (S302). The storage device obtains a second service type of second data stored in a second logical unit (S303). The second service type is different from the first service type. The storage device processes the second data based on a second data reduction manner that matches the second service type (S304). The first data reduction manner includes data compression and/or data deduplication. The second data reduction manner includes data compression and/or data deduplication. The first data reduction manner is different from the second data reduction manner.

Abstract: The present application relates to the field of charging electrical apparatuses, and more particularly, to a charging authorization approach for objects to be recharged, an automatic authorization approach and system for charging apparatuses. The present application intends to solve the problem of complicate authentication procedure and poor user experience when a charging apparatus authenticates an electric vehicle in the prior art.

Abstract: The present application relates to the field of positioning, particularly to a positioning apparatus and method for locating devices within a vehicle based on iBeacon. The application aims at solving the problem that occupants at different positions within the vehicle interfere with each other when controlling on-board equipment. To this end, the apparatus comprises: at least three iBeacon modules, each of which can send out broadcasting data packets; at least one terminal device capable of receiving the broadcasting data packets sent out by the iBeacon modules. The positioning apparatus can also extract RSSI values of the broadcasting data packets and calculate specific position of the at least one terminal device within the vehicle according to the RSSI values.