Abstract: A method for selecting a grasp posture of a dual-arm robot includes: setting a fitness value range, an iteration quantity threshold, and a fitness function; calculating the fitness value of the population, determining whether the population is within the value range, ending an iteration if the population is within the value range or continuing to determine whether a quantity of iterations reaches the iteration quantity threshold if the population is not within the value range, ending the iteration if the quantity of iterations reaches the iteration quantity threshold or performing crossover and mutation operations if the quantity of iterations does not reach the iteration quantity threshold, and dynamically selecting a gene retention strategy based on an iteration depth and a fitness value to retain a gene; updating a gene population representing a grasping position and performing determining cyclically; and obtaining an optimal target corresponding to dual arms after the iteration.

Abstract: A titanium dioxide micro-nanocontainers, corrosion-resistant waterborne epoxy coatings and preparation method thereof, including preparation steps as follows: TiO2 micro-nano spheres are synthesized by applying hydrothermal method; a polyaniline layer doped with molybdate ions is deposited on the surface of TiO2 micro-nano spheres by adopting the method of in-situ chemical polymerization, TiO2/PANI-MoO42? micro-nano-spheres are obtained, then, polydopamine is encapsulated on the surface of TiO2/PANI-MoO42? micro-nano spheres to obtain titanium dioxide micro-nanocontainers; next, antirust filler, defoamer, dispersant and thickener are added into waterborne epoxy emulsion, then titanium dioxide micro-nanocontainers are added in the waterborne epoxy emulsion for dispersing and grinding, filtering and encapsulating to obtain component A; the waterborne epoxy curing agent and deionized water are mixed in proportion to obtain component B; component A is stirred, then it is mixed with the component B in proportion,

Abstract: Disclosed are an identifying method and an identifying system for a centrifuge rotor. The identifying method for a centrifuge rotor is based on a centrifuge rotor identifying system which includes a code disk with a plurality of pairs of magnetic poles, a Hall sensor and a controlling device. The method includes the following steps: according to a predetermined code rule, detecting the duration of each level signal generated from the Hall sensor; according to the total number of windows of the code disk and the duration of each level signal, determining the preliminary code; according to the predetermined code rule, determining the code starter; and based on the code starter, ordering the preliminary code to the rotor final code.

Abstract: A method for preparing an aluminum carbon composite by using a foam aluminum includes the following steps. Electromagnetic stirring and drying are performed on the foam aluminum and a carbon material to obtain a foam aluminum preform; an aluminum block is melted into aluminum liquid, the aluminum liquid is adjusted to qualified aluminum liquid, the qualified aluminum liquid is cooled to a temperature of 620˜650° C. and keeping the temperature to make the qualified liquid aluminum become a semi-solid state, then the foam aluminum preform is pressed into the qualified liquid aluminum and performing electromagnetic stirring. A mold is heated to a certain temperature and extrusion molding is performed to obtain a carbon reinforced aluminum matrix composite material. The method overcomes a problem that the carbon material and the aluminum matrix have poor wettability and are not easy to be added into the aluminum matrix.

Abstract: A method for preparing an aluminum carbon composite by using a foam aluminum includes the following steps. Electromagnetic stirring and drying are performed on the foam aluminum and a carbon material to obtain a foam aluminum preform; an aluminum block is melted into aluminum liquid, the aluminum liquid is adjusted to qualified aluminum liquid, the qualified aluminum liquid is cooled to a temperature of 620˜650° C. and keeping the temperature to make the qualified liquid aluminum become a semi-solid state, then the foam aluminum preform is pressed into the qualified liquid aluminum and performing electromagnetic stirring. A mold is heated to a certain temperature and extrusion molding is performed to obtain a carbon reinforced aluminum matrix composite material. The method overcomes a problem that the carbon material and the aluminum matrix have poor wettability and are not easy to be added into the aluminum matrix.

Abstract: A graphene reinforced aluminum matrix composite with high electrical conductivity and a preparation method thereof. The method includes: obtaining aluminum coated graphene powder by plating aluminum on a graphene surface, melting aluminum block into aluminum liquid, heating a mold to be lower than an aluminum melting point, alternately pouring the aluminum liquid and the aluminum coated graphene powder into the mold for layered casting to obtain a sandwich structure; extruding the sandwich structure into a rectangular test block and then heating to 500˜600° C., performing heat preservation for a preset time and performing forging treatment, and performing longitudinal cold deformation under inert gas to obtain the graphene reinforced aluminum matrix composite. The method can solve a problem that poor wettability of graphene and aluminum matrix, the graphene is evenly dispersed in the aluminum matrix, which can improve strength of the aluminum matrix and keep its high electrical conductivity.

Abstract: A method for improving lubricating performance of lubricating oils is provided and includes: adding copper phosphate with a porous structure into a base oil, a mass percent of the copper phosphate with the porous structure to the base oil is 0.0001% ˜50%, the porous structure is one of a foam porous structure and a porous nanoflower structure. The copper phosphate with the porous structure is obtained by adding a divalent copper salt solution into an alkaline disodium hydrogen phosphate solution or alkaline phosphoric acid buffer solution and then separating a precipitate. When a ratio of a concentration of a divalent copper ion to that of a phosphate ion is 1:0.1 to 400, the porous structure is porous foam or nanoflower. The porous structure can be well dispersed in the lubricating oil for 1 hour. After adding the lubricating oil, excellent friction reduction and anti-wear is achieved.

Abstract: A graphene reinforced aluminum matrix composite with high electrical conductivity and a preparation method thereof. The method includes: obtaining aluminum coated graphene powder by plating aluminum on a graphene surface, melting aluminum block into aluminum liquid, heating a mold to be lower than an aluminum melting point, alternately pouring the aluminum liquid and the aluminum coated graphene powder into the mold for layered casting to obtain a sandwich structure; extruding the sandwich structure into a rectangular test block and then heating to 500˜600° C., performing heat preservation for a preset time and performing forging treatment, and performing longitudinal cold deformation under inert gas to obtain the graphene reinforced aluminum matrix composite. The method can solve a problem that poor wettability of graphene and aluminum matrix, the graphene is evenly dispersed in the aluminum matrix, which can improve strength of the aluminum matrix and keep its high electrical conductivity.

Abstract: Disclosed is a friction-reducing and anti-wear composite material for a wading kinematic pair and a method of preparing the same. The friction-reducing and anti-wear composite material is prepared from carbon fiber (CF) among inorganic fillers, polyimide (PI) and polyether ether ketone (PEEK). These three materials are wet-mixed, dried and placed in a mold followed by curing by a heat press. The cured product is cooled and demolded to obtain the CF/PI/PEEK friction-reducing and anti-wear composite material for a wading kinematic pair. Tribological properties of the PEEK material are enhanced due to synergistic effect arising from hybrid organic-inorganic filling. The friction-reducing and anti-wear composite material provided in the invention has significantly reduced friction coefficient and wear volume loss under the seawater environment.

Abstract: The present disclosure provides an input device for an intelligent terminal, wherein the input device is in communication connection with the intelligent terminal and transmits a received input operation to the intelligent terminal, the input operation is displayed on a screen of the intelligent terminal, and the input device includes at least one operating portion; one end of the input device is recessed inwardly to form a recess, and the recess accommodates a top portion or a bottom portion of the intelligent terminal; when the input device is connected with the intelligent terminal, the top portion or the bottom portion of the intelligent terminal is inserted into the recess, the operating portion and the screen of the intelligent terminal are arranged on a same side, and a display interface of the screen of the intelligent terminal is exposed in a projection range of the operating portion.

Abstract: The present disclosure provides an input device for an intelligent terminal, wherein the input device is in communication connection with the intelligent terminal and transmits a received input operation to the intelligent terminal, the input operation is displayed on a screen of the intelligent terminal, and the input device includes at least one operating portion; one end of the input device is recessed inwardly to form a recess, and the recess accommodates a top portion or a bottom portion of the intelligent terminal; when the input device is connected with the intelligent terminal, the top portion or the bottom portion of the intelligent terminal is inserted into the recess, the operating portion and the screen of the intelligent terminal are arranged on a same side, and a display interface of the screen of the intelligent terminal is exposed in a projection range of the operating portion.

Abstract: The present disclosure provides an input device for an intelligent terminal, a shell and an intelligent terminal, wherein the input device is in communication connection with the intelligent terminal, and the input device includes at least one operating portion and at least one first fixing portion; the input device is assembled and matched with the intelligent terminal through the shell, and an inside surface of the shell surrounds the intelligent terminal; an outside surface in a vertical direction of the shell is provided with a second fixing portion assembled and matched with the first fixing portion; when the first fixing portion and the second fixing portion are in an assembled state, the input device is located on one side of the shell in a horizontal direction; and when the shell is assembled with the intelligent terminal, an inside surface in a vertical direction corresponding to the second fixing portion is contacted with a top end surface or a bottom end surface of the intelligent terminal.

Abstract: Disclosed is a friction-reducing and anti-wear composite material for a wading kinematic pair and a method of preparing the same. The friction-reducing and anti-wear composite material is prepared from carbon fiber (CF) among inorganic fillers, polyimide (PI) and polyether ether ketone (PEEK). These three materials are wet-mixed, dried and placed in a mold followed by curing by a heat press. The cured product is cooled and demolded to obtain the CF/PI/PEEK friction-reducing and anti-wear composite material for a wading kinematic pair. Tribological properties of the PEEK material are enhanced due to synergistic effect arising from hybrid organic-inorganic filling. The friction-reducing and anti-wear composite material provided in the invention has significantly reduced friction coefficient and wear volume loss under the seawater environment.

Abstract: A mobile terminal is provided. The mobile terminal includes a display screen on a terminal housing and a periscope optical zoom lens. The display screen and the periscope optical zoom lens are arranged in a non-overlapping manner in a thickness direction of the terminal, and the periscope optical zoom lens is located in a top area of the terminal. Additionally, the periscope optical zoom lens is configured to collect an image in an optical signal form by means of optical zoom, so that an optical-to-electrical conversion chip converts the image in an optical signal form into an image in a digital signal form and the display screen is configured to display the image in a digital signal form.

Abstract: Embodiments provide a camera assembly, which is configured to be detachably mounted on a mobile terminal body. The camera assembly includes a housing, a photographing unit, and a mounting kit, where the photographing unit is disposed in the housing and is configured to capture a picture and transmit the captured picture to the mobile terminal body, and the mounting kit is disposed on the housing and is configured to be detachably mounted on the mobile terminal body, so as to detachably mount the camera assembly to the mobile terminal body.

Abstract: A mobile terminal is provided. The mobile terminal includes a display screen on a terminal housing and a periscope optical zoom lens. The display screen and the periscope optical zoom lens are arranged in a non-overlapping manner in a thickness direction of the terminal, and the periscope optical zoom lens is located in a top area of the terminal. Additionally, the periscope optical zoom lens is configured to collect an image in an optical signal form by means of optical zoom, so that an optical-to-electrical conversion chip converts the image in an optical signal form into an image in a digital signal form and the display screen is configured to display the image in a digital signal form.

Abstract: Embodiments provide a camera assembly, which is configured to be detachably mounted on a mobile terminal body. The camera assembly includes a housing, a photographing unit, and a mounting kit, where the photographing unit is disposed in the housing and is configured to capture a picture and transmit the captured picture to the mobile terminal body, and the mounting kit is disposed on the housing and is configured to be detachably mounted on the mobile terminal body, so as to detachably mount the camera assembly to the mobile terminal body.

Abstract: A handheld electronic product comprising a square housing, where four corners of the housing are provided with bezels, and the left side and the right side of the housing have no bezels, a glass cover is built into the housing in a retracted manner, the rear surface of the glass cover is connected to the housing, and the bezels provided at the four corners of the housing are higher than the rear surface of the glass cover. Embodiments of the present invention can reduce a width of the handheld electronic product and assembly procedures.

Abstract: A handheld electronic product comprising a square housing, where four corners of the housing are provided with bezels, and the left side and the right side of the housing have no bezels, a glass cover is built into the housing in a retracted manner, the rear surface of the glass cover is connected to the housing, and the bezels provided at the four corners of the housing are higher than the rear surface of the glass cover. Embodiments of the present invention can reduce a width of the handheld electronic product and assembly procedures.