Abstract: A protection assembly of the electronic device is disposed along a side edge of a display screen assembly, and includes a decorative layer, a support, and a buffer layer. The support is located on a side of the display screen assembly, and is fastened to the side edge of the display screen assembly. The decorative layer is located on an outer side of the display screen assembly and the support. A first part of the decorative layer is bonded to a first surface of the support through a first adhesive layer, a second part of the decorative layer abuts against a screen surface through the buffer layer, and the first surface is a surface that is on the support and that is located on a side of the screen surface of the display screen assembly.

Abstract: A positive electrode plate includes a positive electrode current collector and two positive electrode active material layers on both surfaces of the positive electrode current collector. The positive electrode active material layer includes a positive electrode active material and graphene. And 7.74?Dv501/2+0.05 THK?10.2, Dv50 is a particle size of the positive electrode active material and THK is a thickness of the positive electrode plate. And 0.078?w*CW+0.01n?1.9, n is a quantity of layers of the graphene, w is a mass percentage of the graphene in the positive electrode active layer, and CW is a one-side coating weight of the positive electrode active material layer.

Abstract: A positive electrode, including a positive electrode current collector, a positive electrode active material layer, and a coating, where the positive electrode active material layer and the coating are provided on a surface of the positive electrode current collector, and adhesion between the coating and the positive electrode current collector is greater than or equal to 5 N/m. The coating is provided, the coating and the positive electrode current collector are designed, and the adhesion of the coating to the positive electrode current collector is improved so that the safety performance of electrode assemblies containing such positive electrode can be effectively improved.

Abstract: An electrochemical apparatus includes an electrode and an electrolyte. The electrode includes a current collector, an intermediate layer disposed on the current collector, and an active material layer disposed on the intermediate layer. The intermediate layer has a specific area ratio to the active material layer. The electrolyte includes a sulfur-oxygen double bond-containing compound. The electrochemical apparatus has improved direct current internal resistance and safety performance.

Abstract: A terahertz polarization beam splitter based on a two-core negative curvature fiber is provided, which relates to the technical field of optical fiber communication. The polarization beam splitter includes: a base circular tube and core separation structures. Multiple large cladding tubes are internally tangent and connected to an inner wall of the base circular tube and arranged at equal intervals along a circumference of the inner wall of the base circular tube, and the multiple large cladding tubes are symmetrically distributed on the inner wall of the base circular tube. Embedded circular tubes are internally tangent and connected to inner walls of the multiple large cladding tubes respectively. The core separation structures are two in number.

Abstract: A positive electrode and an electrochemical apparatus and an electronic apparatus containing the same. A positive electrode, the positive electrode including a current collector and a positive electrode active substance layer are disposed on the current collector, where the positive electrode active substance layer includes a positive electrode active material and graphene; and a ratio Dv50/D1 of a particle size Dv50 of the positive electrode active material to a sheet diameter D1 of the graphene is 0.45-4.5.

Abstract: An electrochemical apparatus includes a positive electrode. The positive electrode includes a current collector, a first material layer, and a second material layer. The second material layer is disposed on at least one surface of the current collector, and the first material layer is disposed between the current collector and the second material layer. The first material layer includes a leveling agent. A difference between the maximum value and the minimum value of thickness of the first material layer is less than or equal to 3 ?m. The obtained positive electrode has high uniformity in thickness, and there is strong adhesion between the current collector and the first material layer, and between the second material layer and the first material layer.

Abstract: A terahertz polarization beam splitter based on a two-core negative curvature fiber is provided, which relates to the technical field of optical fiber communication. The polarization beam splitter includes: a base circular tube and core separation structures. Multiple large cladding tubes are internally tangent and connected to an inner wall of the base circular tube and arranged at equal intervals along a circumference of the inner wall of the base circular tube, and the multiple large cladding tubes are symmetrically distributed on the inner wall of the base circular tube. Embedded circular tubes are internally tangent and connected to inner walls of the multiple large cladding tubes respectively. The core separation structures are two in number.

Abstract: The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections.

Abstract: A positive electrode including a positive current collector, a positive active material layer, a bonding layer and a conductive layer. The bonding layer is disposed between the positive current collector and the positive active material layer. The conductive layer is disposed between the bonding layer and the positive active material layer. The conductive layer includes a conductive agent with a weight percent of 20 wt % to 95 wt % and a binder with a weight percent of 5 wt % to 80 wt %. This helps to improve the cycle performance and the high-temperature storage performance of the electrochemical device.

Abstract: A positive electrode plate includes a positive electrode current collector and two positive electrode active material layers on both surfaces of the positive electrode current collector. The positive electrode active material layer includes a positive electrode active material and graphene. And 7.74?Dv501/2+0.05 THK?10.2, Dv50 is a particle size of the positive electrode active material and THK is a thickness of the positive electrode plate. And 0.078?w*CW+0.01n?1.9, n is a quantity of layers of the graphene, w is a mass percentage of the graphene in the positive electrode active layer, and CW is a one-side coating weight of the positive electrode active material layer.

Abstract: The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections.

Abstract: The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections.

Abstract: The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections.