Abstract: Provided are a centrifugal battery liquid injection mechanism and a liquid injection method thereof. The centrifugal battery liquid injection mechanism comprises a liquid injection device and a driving device, the liquid injection device is provided with a piston mechanism and a liquid outlet head capable of being opened and closed, and one end of the liquid injection device close to the liquid outlet head is further provided with a liquid injection port capable of being opened and closed; and the liquid injection port is used for injecting a wetting liquid into the liquid injection device. The liquid injection device is connected with a to-be-wetted device through the liquid outlet head, so as to inject the wetting liquid into the to-be-wetted device. The driving device is connected with the to-be-wetted device for driving the to-be-wetted device to move.

Abstract: A non-invasive time domain reflection probe calibration method includes: using different volume ratio of ethanol and deionized water mixed solution to calculate a test target's medium weight coefficient and waveguide length of the non-invasive time domain reflection probes; using different concentrations of NaCl solutions to calibrate a waveguide geometric dimensioning of the non-invasive time domain reflection probes; preparing compacted soil samples with known different moisture contents and densities, and calibrating a correlation parameter of compacted soil samples' dielectric constant and conductivity with moisture content and density. The method not only determines the sensitivity of the test target medium of the non-invasive time domain reflection probes, but also obtains the waveguide length and geometric dimensioning of the probe, and realizes an accurate test of moisture content and density of the soil.

Abstract: Disclosed are an acoustic module and an electronic product. The acoustic module comprises: a module housing, comprising an upper housing and a lower housing, wherein the upper housing of the module has a side wall and a top wall, the side wall has a through hole thereon, a distance between an upper edge of the through hole and the top wall is greater than or equal to one half of an overall height of the side wall, and the upper housing is capable of being fastened onto the lower housing; a fixing member; and a microphone; wherein the fixing member is fastened and fixed in the upper housing, the fixing member is configured to fix the microphone on an inner surface of the top wall, and the fixing member has a sound channel formed therein through which the microphone and the through hole are connected and are in communication.

Abstract: Disclosed are an acoustic module and an electronic product. The acoustic module comprises: a module housing, comprising an upper housing and a lower housing, wherein the upper housing of the module has a side wail and a top wall, the side wall has a through hole thereon, a distance between an upper edge of the through hole and the top wall is greater than or equal to one half of an overall height of the side wall, and the upper housing is capable of being fastened onto the lower housing; a fixing member; and a microphone; wherein the fixing member is fastened and fixed in the upper housing, the fixing member is configured to fix the microphone on an inner surface of the top wall, and the fixing member has a sound channel formed therein through which the microphone and the through hole are connected and are in communication.

Abstract: The present invention provides an in vitro synthesis method for an sgRNA and a kit thereof. Specifically, the present invention provides a nucleic acid construct having a structure represented by formula I from 5? to 3?: Y1-L1-Y2-L2-Y3-Y4 (I), wherein Y1 is an RNA polymerase promoter region; L1 is absent or a linking sequence; Y2 is a target DNA sequence; L2 is absent or a linking sequence; Y3 is a downstream primer binding region; Y4 is absent or a nucleotide sequence; and each “-” is independently a bond or a nucleotide linking sequence.

Abstract: The present invention provides a sound generation device and a preparation method of a metal plastic part. The sound generation device comprises a metal plastic part. The metal plastic part comprises a plastic part and a metal insert that is combined with the plastic part. An oxidation film that is obtained through metal nanocrystallization and a nanopore that is formed in a surface of the oxidation film and has a pore diameter of 20-1,000 nm are arranged on a surface of the metal insert. The nanopore is filled with a resin composition from which the plastic part is made. As the nanopore is filled with the resin composition from which the plastic part is made, the metal insert and the plastic part are in close fit with each other, which greatly enhances the gluing capability of the metal insert and prevents the metal insert and the plastic part which are formed through injection molding from being separated.

Abstract: The present invention discloses a speaker and a rear cover therefor. The rear cover comprises a rear cover body whose one side is provided with a first connection portion; and a connection assembly provided with a first surface and a second surface which are connected with each other. A contact is formed by extending and bending the first surface, and is provided with a conductor. A connection hole is further formed in the first surface. A limiting device and a second connection portion are arranged on the second surface; and the cross section of the limiting device is C-shaped. The connection assembly is connected to the first connection portion of the rear cover body through the second connection portion. The contact is configured to conduct the speaker with the outside. The connection hole is configured to fix the speaker or conduct the speaker with other components.

Abstract: The present invention provides a sound generation device and a preparation method of a metal plastic part. The sound generation device comprises a metal plastic part. The metal plastic part comprises a plastic part and a metal insert that is combined with the plastic part. An oxidation film that is obtained through metal nanocrystallization and a nanopore that is formed in a surface of the oxidation film and has a pore diameter of 20-1,000 nm are arranged on a surface of the metal insert. The nanopore is filled with a resin composition from which the plastic part is made. As the nanopore is filled with the resin composition from which the plastic part is made, the metal insert and the plastic part are in close fit with each other, which greatly enhances the gluing capability of the metal insert and prevents the metal insert and the plastic part which are formed through injection molding from being separated.

Abstract: A speaker module comprising: a housing, the housing comprising an upper housing and a lower housing, the housing defining an inner cavity structure, at least one of the upper housing and the lower housing being provided with a group of micropores arranged in an array; and a speaker unit, comprising a magnetic circuit assembly and a vibrating assembly, the vibrating assembly dividing the inner cavity structure into a front cavity and a rear cavity, the magnetic circuit assembly being provided with a magnetic gap having a predetermined pattern, the magnetic circuit assembly being disposed close to the lower housing. A technical problem to be solved by the present invention is the heat dissipation of the speaker module.

Abstract: The present invention discloses a speaker and a rear cover therefor. The rear cover comprises a rear cover body whose one side is provided with a first connection portion; and a connection assembly provided with a first surface and a second surface which are connected with each other. A contact is formed by extending and bending the first surface, and is provided with a conductor. A connection hole is further formed in the first surface. A limiting device and a second connection portion are arranged on the second surface; and the cross section of the limiting device is C-shaped. The connection assembly is connected to the first connection portion of the rear cover body through the second connection portion. The contact is configured to conduct the speaker with the outside. The connection hole is configured to fix the speaker or conduct the speaker with other components.

Abstract: A speaker module comprising: a housing, the housing comprising an upper housing and a lower housing, the housing defining an inner cavity structure, at least one of the upper housing and the lower housing being provided with a group of micropores arranged in an array; and a speaker unit, comprising a magnetic circuit assembly and a vibrating assembly, the vibrating assembly dividing the inner cavity structure into a front cavity and a rear cavity, the magnetic circuit assembly being provided with a magnetic gap having a predetermined pattern, the magnetic circuit assembly being disposed close to the lower housing. A technical problem to be solved by the present invention is the heat dissipation of the speaker module.

Abstract: This invention disclosed an anti-HPV drug and its applications in preparing medicines for treatment of HPV (human papilloma virus) infection. This drug was characterized by using human rabies vaccine as its active ingredient and being produced by adding pharmacologically acceptable carriers. This invention also disclosed drug applications in preparing medicines for treatment of HPV infection, i.e. new applications of human rabies vaccines for preparing medicines against HPV infection. The anti-HPV drug described in this invention (i.e. human rabies vaccine) had obvious treatment effects on HPV infection. According to the animal tests and preclinical observation, this drug provided satisfactory and beneficial effects and had the characteristics of safety, effectiveness and nearly no recurrence after treatment; the negative-conversion rate in patients with positive HPV-infection reached 90% after treatment.