Abstract: Provided is a wireless Bluetooth earphone, which belongs to the field of headphone technology. The wireless Bluetooth earphone comprises a housing, a circuit board, a battery, a connection ring, and a connection terminal. The housing comprises a main housing and a battery housing. The circuit board is arranged in the main housing. The connection ring has a first end and a second end. The first end is connected to one end of the main housing, that is, the first end is connected to one end of the rear housing arranged with an opening. The second end is detachably connected to the battery housing, and the battery is arranged in the battery housing. The connection terminal is arranged in the connection ring. One end of the connection terminal is electrically connected to the circuit board, and the other end of the connection terminal is electrically connected to the battery.

Abstract: The present disclosure provides a method for preparing lithium iron phosphate from ferric hydroxyphosphate, including: purifying ferrous sulfate to form a ferrous sulfate solution, adding hydrogen peroxide, phosphoric acid, an ammonium dihydrogen phosphate solution and ammonia water into the ferrous sulfate solution and then reacting to form a mixed slurry, holding the mixed slurry at a temperature for a period of time, and then washing with water and subjecting to press filtration to form ferric hydroxyphosphate precursors with different iron-phosphorus ratios; then flash drying, sintering at a high temperature, and pulverizing to obtain ferric hydroxyphosphate precursors with different iron-phosphorus ratios and different specific surface areas.

Abstract: A method for processing a plurality of queries is provided according to embodiments of the present disclosure. In this method, based on a plurality of queries and an execution plan for the plurality of quires, a plurality of record identification (ID) numbers can be stored into a pool in a numerical order. Each of the plurality of record ID numbers can identify a data record in a database. Then, the execution plan can be performed to batch a plurality of data records corresponding to the plurality of record ID numbers in the database based on a distribution of the plurality of record ID numbers in the pool.

Abstract: Disclosed are a preparation method and application of iron phosphate. The preparation method comprises: subjecting iron phosphate waste to calcination, dissolving it in an acid solution, and filtering to obtain filtrate, namely a solution A containing iron phosphorus; stirring a mixed solution of the solution A and a first alkali solution, adjusting pH of the mixed solution to acidity for reaction, and after washing and filtering to obtain second filter residue, namely an amorphous yellow iron phosphate filter cake; subjecting the yellow iron phosphate filter cake to aging and heating, adding phosphoric acid and a second alkali solution for reaction, followed by washing and filtering to obtain third filter residue, namely a basic ammonium iron phosphate filter cake, then drying to obtain basic ammonium iron phosphate crystal powder; and subjecting the basic ammonium iron phosphate crystal powder to calcination for dehydration and cooling to obtain iron phosphate.

Abstract: A connecting cable includes a first end, a second end and a heat dissipation channel in communication with the first end and the second end. The first end is adapted to connect with a first component. The second end is adapted to connect with a second component. The present disclosure also discloses a cable connector, a charger, and a charger assembly having the connecting cable. Compared with the prior art, in the present disclosure, by providing the heat dissipation channel in the connecting cable, the heat generated by the electronic device can be discharged in time through the heat dissipation channel. Therefore, the heat dissipation performance is improved.

Abstract: A hinge assembly comprise a hinge shaft (102) and a friction gear (108) located around the hinge shaft (102), wherein the friction gear (108) is to rotate around the hinge shaft (102) to create a friction force between the friction gear (108), a washer (106) and a retaining ring (114), generating a damper responsive to closing of a component coupled to the hinge assembly. A hinging method is disclosed.

Abstract: The present invention provides a graphics processing system, the graphics processing system comprises a central processing unit, a plurality of graphics processing units, a bus communication protocol switch and a management board. The graphics processor units are communicatively coupled to the central processing unit. The bus communication protocol switch is coupled to the graphics processing units to implement mutual communications between the graphics processor units. The management board is coupled to the bus communication protocol switch for managing the bus communication protocol switch. The bus bar communication protocol switch can maximize and equalize the peer-to-peer network communication bandwidth between the graphics processing units, and the theoretical maximum bidirectional bandwidth can reach 300 GB/s, and is capable of expanding additional eight-graphics processing units to form a sixteen-GPUs system that enables peer-to-peer network communication of any two graphics processing units.

Abstract: A phase change memory apparatus comprises at least one heating layer; and at least one phase change layer comprising a vanadium dioxide layer, wherein each of the at least one phase change layer is set corresponding to each of the at least one heating layer, the at least one heating layer is configured to heat the at least one phase change layer.

Abstract: A data transmission method and apparatus are disclosed that resolves a technical problem where an existing data encryption algorithm offers poor security during transmission of data. The solution includes obtaining, by a first terminal, a data transmission request sent by a second terminal, the data transmission request at least carrying first encrypted data that is obtained by encrypting first exchange key of the second terminal by using a private key of the second terminal. The solution further includes decrypting, by the first terminal, the first encrypted data by using a public key of the second terminal to obtain the first exchange key, and obtaining a shared key of the first terminal and the second terminal according to the first exchange key. The solution further includes encrypting, by the first terminal, to-be-transmitted data by using the shared key to obtain encrypted to-be-transmitted data, and sending the encrypted to-be-transmitted data to the second terminal.

Abstract: The present invention provides a graphics processing system, the graphics processing system comprises a central processing unit, a plurality of graphics processing units, a bus communication protocol switch and a management board. The graphics processor units are communicatively coupled to the central processing unit. The bus communication protocol switch is coupled to the graphics processing units to implement mutual communications between the graphics processor units. The management board is coupled to the bus communication protocol switch for managing the bus communication protocol switch. The bus bar communication protocol switch can maximize and equalize the peer-to-peer network communication bandwidth between the graphics processing units, and the theoretical maximum bidirectional bandwidth can reach 300 GB/s, and is capable of expanding additional eight-graphics processing units to form a sixteen-GPUs system that enables peer-to-peer network communication of any two graphics processing units.

Abstract: A method for making patterned two dimensional (2D) transition metal dichalcogenides (TMDs) nanomaterials is disclosed. The method includes making a substrate, wherein the substrate has a substrate surface including a first portion surface and a second portion surface, the first portion surface is formed by oxide or nitride, and the second portion surface is formed by mica; applying a mono 2D TMDs nanomaterials; annealing the mono 2D TMDs nanomaterials and the substrate in an oxygen containing gas, the annealing temperature is controlled so that only the part of the 2D TMDs nanomaterials, that is on the second portion surface, is removed by oxidization, and the other part of the 2D TMDs nanomaterials, that is on the first portion surface, is remained to form the patterned 2D TMDs nanomaterials.

Abstract: A method for making patterned two dimensional (2D) transition metal dichalcogenides (TMDs) nanomaterials is disclosed. The method includes making a substrate, wherein the substrate has a substrate surface including a first portion surface and a second portion surface, the first portion surface is formed by oxide or nitride, and the second portion surface is formed by mica; applying a mono 2D TMDs nanomaterials; annealing the mono 2D TMDs nanomaterials and the substrate in an oxygen containing gas, the annealing temperature is controlled so that only the part of the 2D TMDs nanomaterials, that is on the second portion surface, is removed by oxidization, and the other part of the 2D TMDs nanomaterials, that is on the first portion surface, is remained to form the patterned 2D TMDs nanomaterials.

Abstract: A repeater device is with a plurality of parameter configuration modes for connecting a memory and a controller, and the repeater device comprises the following figures. A signal repeater is configured to connect to the memory and the controller respectively, and the signal repeater is adapted to acquire a preset parameter data for setting an internal parameter data, and generating a switch signal after the internal parameter data is completed setting. A switch device electrically connects to the signal repeater, wherein the switch device is adapted to conduct a data transmission path between the signal repeater and the controller based on the switch signal. The signal repeater resets the internal parameter data when receives a target parameter data by the data transmission path between the signal repeater and the controller.

Abstract: A phase change memory apparatus comprises at least one heating layer; and at least one phase change layer comprising a vanadium dioxide layer, wherein each of the at least one phase change layer is set corresponding to each of the at least one heating layer, the at least one heating layer is configured to heat the at least one phase change layer.

Abstract: A phase change memory apparatus comprises at least one heating layer; and at least one phase change layer comprising a vanadium dioxide layer, wherein each of the at least one phase change layer is set corresponding to each of the at least one heating layer, the at least one heating layer is configured to heat the at least one phase change layer.

Abstract: A phase change memory apparatus comprises at least one heating layer; and at least one phase change layer comprising a vanadium dioxide layer, wherein each of the at least one phase change layer is set corresponding to each of the at least one heating layer, the at least one heating layer is configured to heat the at least one phase change layer.

Abstract: A data transmission method and apparatus are disclosed that resolves a technical problem where an existing data encryption algorithm offers poor security during transmission of data. The solution includes obtaining, by a first terminal, a data transmission request sent by a second terminal, the data transmission request at least carrying first encrypted data that is obtained by encrypting first exchange key of the second terminal by using a private key of the second terminal. The solution further includes decrypting, by the first terminal, the first encrypted data by using a public key of the second terminal to obtain the first exchange key, and obtaining a shared key of the first terminal and the second terminal according to the first exchange key. The solution further includes encrypting, by the first terminal, to-be-transmitted data by using the shared key to obtain encrypted to-be-transmitted data, and sending the encrypted to-be-transmitted data to the second terminal.