Abstract: This application provides a fluoropolymer, a preparation method therefor, a positive electrode plate, a secondary battery, and an electric device. The fluoropolymer comprises a structural unit derived from vinylidene fluoride and a structural unit derived from an unsaturated carboxylic acid monomer, wherein a weight average molecular weight of the fluoropolymer ranges from 5 million to 9 million, and optionally, from 5 million to 8 million.

Abstract: A layout diagram generation method, an apparatus, and a system for a photovoltaic power generation system, and a storage medium are provided. The method includes: acquiring device information and first electrical location information of each of the plurality of photovoltaic devices, and acquiring physical location information of the at least one photovoltaic module and second electrical location information of a photovoltaic device connected to the at least one photovoltaic module. Generating a layout diagram of the photovoltaic power generation system based on the first electrical location information, the second electrical location information, the device information, and the physical location information.

Abstract: Provided is a method for training an image cropping model, a method for processing an image, an electronic device and a storage medium, relating to the field of deep learning and image processing technology. The training method includes: obtaining sample data, wherein the sample data at least includes: a sample image, a first cropped image obtained by cropping the sample image in a first manner, and a second cropped image obtained by cropping the sample image in a second manner; determining a target loss function; and using at least the sample data and the target loss function to perform model training on a preset image cropping model to obtain a target image cropping model.

Abstract: A BAB-type block copolymer comprises a B-block and an A-block, the B-block contains a structural unit represented by formula I, and the A-block contains one or more of a structural unit represented by formula II and a structural unit represented by formula III, where R1, R2 and R3 are each independently selected from one or more of hydrogen, fluorine, and C1-3 alkyl containing at least one fluorine atom, R4, R5 and R6 are each independently selected from hydrogen and substituted or unsubstituted C1-5 alkyl, and R7 is selected from carboxyl, an ester group, hydroxyl, amido, cyano, and a substituted or unsubstituted aromatic group.

Abstract: This application provides a binder composition. The binder composition includes a first fluoropolymer and a second fluoropolymer, where the first fluoropolymer includes polyvinylidene fluoride with a weight-average molecular weight of 5000000-9000000, and a weight-average molecular weight of the second fluoropolymer is not greater than 600000. Featuring good processability, this binder composition, even added in small amounts, can provide electrode plates with great adhesion force and improve the cycling performance of a battery.

Abstract: This application provides a binder composition. The binder composition includes a first fluoropolymer and a second fluoropolymer, where the first fluoropolymer includes polyvinylidene fluoride with a weight-average molecular weight of 1,500,000-5,000,000, and a weight-average molecular weight of the second fluoropolymer does not exceed 600,000. The binder composition has good processability, achieves high adhesion force for the electrode plate when added in small amounts, and improves the cycling performance of the battery.

Abstract: The present disclosure provides a liquid crystal phase shifter array, a driving method thereof, and a laser scanner. The liquid crystal phase shifter array includes a plurality of liquid crystal phase shifter units arranged in array, a first substrate and a second substrate disposed opposite to each other, a liquid crystal layer provided between the first substrate and the second substrate, a first electrode provided on the first substrate, and a second electrode provided on the second substrate. Each liquid crystal phase shifter unit includes a first optical waveguide provided on a side of the first substrate proximal to the liquid crystal layer and arranged to be in direct contact with the liquid crystal layer.

Abstract: The present disclosure provides a method for generating a reply message. The method includes: acquiring a current application scene of a user; acquiring a target object type in conversation with the user; generating at least one candidate reply content corresponding to the application scene and matching with the target object type in an expression style; and adjusting the expression style of the candidate reply content according to an expression style of the user on historical content, to generate at least one target reply content.

Abstract: A liquid crystal phase shifter, a method for producing the same and a method for shifting phase of electromagnetic wave are provided. The liquid crystal phase shifter includes: a first base substrate and a second base substrate opposed to each other; a first liquid crystal modulation portion and a second liquid crystal modulation portion between the first base substrate and the second base substrate; a first electromagnetic wave transport layer between the first base substrate and the first liquid crystal modulation portion; and a second electromagnetic wave transport layer between the first base substrate and the second liquid crystal modulation portion. The first liquid crystal modulation portion is configured to modulate a phase of electromagnetic waves in a first frequency range and the second liquid crystal modulation portion is configured to modulate a phase of electromagnetic waves in a second frequency range different from the first frequency range.

Abstract: A liquid crystal phase shifter, a method for producing the same and a method for shifting phase of electromagnetic wave are provided. The liquid crystal phase shifter includes: a first base substrate and a second base substrate opposed to each other; a first liquid crystal modulation portion and a second liquid crystal modulation portion between the first base substrate and the second base substrate; a first electromagnetic wave transport layer between the first base substrate and the first liquid crystal modulation portion; and a second electromagnetic wave transport layer between the first base substrate and the second liquid crystal modulation portion. The first liquid crystal modulation portion is configured to modulate a phase of electromagnetic waves in a first frequency range and the second liquid crystal modulation portion is configured to modulate a phase of electromagnetic waves in a second frequency range different from the first frequency range.

Abstract: The present disclosure provides a liquid crystal phase shifter array, a driving method thereof, and a laser scanner. The liquid crystal phase shifter array includes a plurality of liquid crystal phase shifter units arranged in array, a first substrate and a second substrate disposed opposite to each other, a liquid crystal layer provided between the first substrate and the second substrate, a first electrode provided on the first substrate, and a second electrode provided on the second substrate. Each liquid crystal phase shifter unit includes a first optical waveguide provided on a side of the first substrate proximal to the liquid crystal layer and arranged to be in direct contact with the liquid crystal layer.

Abstract: A system and method for processing data includes coupling circuitry for connecting a system to a power line and receiving data from the power line, packet detection circuitry for detecting synch mark in the data, and a processor for processing data upon detecting a synch mark.