Abstract: A method for synthesizing an intergrown twin Ni2Mo6S6O2/MoS2 two-dimensional nanosheet with exposed (00L) crystal planes is disclosed. An Ni—Mo bonded precursor is formed by using an ion insertion method to restrict Ni ions to be located in a lattice matrix of a Mo-based compound; a dinuclear metal sulfide Ni2Mo6S6O2 is formed by precisely adjusting and controlling a concentration of a sulfur atmosphere and utilizing a reconstruction effect of Ni element in the lattice matrix of the Mo-based compound; and meanwhile, a growth direction of Ni2Mo6S6O2 is precisely adjusted and controlled by using a method for growing a single crystal in a limited area, so that Ni2Mo6S6O2 is grown, taking a single crystal MoS2 as a growth template, with the single crystal MoS2 alternately along a crystal plane (110) of the single crystal MoS2, so as to form a twin Ni2Mo6S6O2/MoS2 two-dimensional nanosheet in which Ni2Mo6S6O2 and MoS2 are intergrown.

Abstract: Described herein are technologies relating to predicting whether a resource is spam based solely upon a Uniform Resource Locator (URL) for the resource. The URL is tokenized in connection with generating a sequence of numerical identifiers for the resource. A score for the URL is computed based upon the sequence of numerical identifiers, where the score is indicative of a probability that the resource pointed to by the URL is spam. generating a score for the URL based upon the sequence of numbers, wherein the score is indicative of a probability that the resource pointed to by the URL is spam. When the score is above a predefined threshold, a label is assigned to the URL that indicates that the resource pointed to by the URL is spam, and an entry for the resource is not included in a search engine index based upon the label assigned to the URL.

Abstract: Provided are a rotor shaft assembly, a rotor, and a motor. The rotor shaft assembly includes a magnetic core, a first end shaft, a second end shaft, and a protective sleeve. The protective sleeve is provided, in sequence, with a first through hole, a second through hole, and a third through hole; the first end shaft is disposed through the first through hole, at least part of the magnetic core is arranged inside the second through hole, and the second end shaft is disposed through the third through hole.

Abstract: Disclosed are a motor rotor and a permanent magnet motor. The motor rotor includes: a rotating shaft; a magnetic layer fixedly sleeved on the rotating shaft; a first heat diffusion layer wrapped on an outer surface of the magnetic layer away from the rotating shaft for preventing a shielding layer from overheating locally; and the shielding layer wrapped on a surface of the first heat diffusion layer away from the magnetic layer. The first heat diffusion layer is provided between the shielding layer and the magnetic layer of the motor rotor, so that the first heat diffusion layer can prevent the shielding layer and the magnetic layer from overheating locally, and improve heat dissipation efficiency of the shielding layer.

Abstract: Described herein are technologies relating to predicting whether a resource is spam based solely upon a Uniform Resource Locator (URL) for the resource. The URL is tokenized in connection with generating a sequence of numerical identifiers for the resource. A score for the URL is computed based upon the sequence of numerical identifiers, where the score is indicative of a probability that the resource pointed to by the URL is spam. generating a score for the URL based upon the sequence of numbers, wherein the score is indicative of a probability that the resource pointed to by the URL is spam. When the score is above a predefined threshold, a label is assigned to the URL that indicates that the resource pointed to by the URL is spam, and an entry for the resource is not included in a search engine index based upon the label assigned to the URL.

Abstract: Disclosed are a motor rotor and a permanent magnet motor. The motor rotor includes: a rotating shaft; a magnetic layer fixedly sleeved on the rotating shaft; a first heat diffusion layer wrapped on an outer surface of the magnetic layer away from the rotating shaft for preventing a shielding layer from overheating locally; and the shielding layer wrapped on a surface of the first heat diffusion layer away from the magnetic layer. The first heat diffusion layer is provided between the shielding layer and the magnetic layer of the motor rotor, so that the first heat diffusion layer can prevent the shielding layer and the magnetic layer from overheating locally, and improve heat dissipation efficiency of the shielding layer.

Abstract: Provided are a rotor shaft assembly, a rotor, and a motor. The rotor shaft assembly includes a magnetic core, a first end shaft, a second end shaft, and a protective sleeve. The protective sleeve is provided, in sequence, with a first through hole, a second through hole, and a third through hole; the first end shaft is disposed through the first through hole, at least part of the magnetic core is arranged inside the second through hole, and the second end shaft is disposed through the third through hole.

Abstract: A magnetic levitation bearing assembly, including: a magnetic levitation bearing, a shell, and a working clearance adjusting device; the magnetic levitation bearing includes a first iron core, a second iron core and a thrust disk; the working clearance adjusting device is arranged between a radial inner periphery of the shell and the thrust disk along the radial direction, and between the shell and the second iron core along the axial direction; an axial end of the working clearance adjusting device is abutted against the second iron core, a void gap is provided between the shell and the second iron core, an adjustment on the magnetic levitation bearing working clearance is made possible by altering the length between two axial ends of the working clearance adjusting device, such that the working clearance is consistent with a design value.

Abstract: A magnetic levitation bearing assembly, including: a magnetic levitation bearing, a shell, and a working clearance adjusting device; the magnetic levitation bearing includes a first iron core, a second iron core and a thrust disk; the working clearance adjusting device is arranged between a radial inner periphery of the shell and the thrust disk along the radial direction, and between the shell and the second iron core along the axial direction; an axial end of the working clearance adjusting device is abutted against the second iron core, a void gap is provided between the shell and the second iron core, an adjustment on the magnetic levitation bearing working clearance is made possible by altering the length between two axial ends of the working clearance adjusting device, such that the working clearance is consistent with a design value.

Abstract: The invention relates to the field of polymer materials and processing. Provided are a polymer sheet and a manufacturing method and a use thereof. The polymer sheet has a thickness less than its average hole diameter. The polymer sheet is in the form of a cellular board having through holes in the thickness direction, and has a through-hole ratio of 20%-60%, a thickness of 10-500 ?m, and an average hole diameter of 10-500 ?m. The manufacturing method comprises a roll material supplying step, a continuous cutting step and a rolling step. The continuous cutting step has a precision error of ±0.02 mm. The above method can be used to manufacture a material having a low density, high impact resistance, a high compression rate, and low compression set and capable of serving as a sealing and buffering material for an electronic device.