Abstract: A pure electric modular subsea test tree is provided, which includes a connect-disconnect device, wherein the first channel is formed in the connect-disconnect device; the connect-disconnect device is provided with a locking assembly and a connection drive mechanism for driving the locking assembly, and the first electrical connection plug is embedded in the connect-disconnect device, and the connection drive mechanism is electrically connected with the first electrical connection plug; a shear-seal assembly, wherein a second channel communicated with the first channel is formed in the shear-seal assembly; the shear-seal assembly includes at least one shear-seal device capable of plugging the second channel; a connection part is formed on the shear-seal assembly; a heating device is arranged at one end of the shear-seal device far from the connection part. The disclosure relates to a pure electric modular subsea test tree, which has fast response speed and high operation safety.

Abstract: A sealing device of a bearing. The sealing device includes a framework, a sealing component and a plurality of elastic members, wherein the framework and the sealing component are both annular and connected to each other, and the framework is configured to be fixed to a first ring of a bearing. The sealing component is configured to abut against a second ring of the bearing the plurality of elastic members are distributed at intervals in the circumferential direction of the sealing component, and the elastic members are used for applying an elastic force to the sealing component such that the sealing component is pressed against the second ring. A bearing is also provided.

Abstract: The disclosure relates to the field of digital pathology imaging technologies, in particular, to a digital pathology scanner for large-area microscopic imaging. The digital pathology scanner for large-area microscopic imaging includes a plurality of microscopic objectives and a plurality of digital image sensors; the microscopic objectives and the digital image sensors are equal in quantity and are fixed relatively in a one-to-one correspondence manner. The digital image sensors are sequentially distributed so as to form a sensor array. The sensor array enables images formed by the digital image sensors to be sequentially distributed without intervals in a second direction when moving in a first direction, wherein the first direction is perpendicular to the second direction.

Abstract: An aluminum alloy cage and a method for producing the same. The aluminum alloy cage has a shot-peened aluminum alloy cage substrate and a coating formed on the surface of shot-peened aluminum alloy cage substrate, the coating including at least one nickel containing layer. The aluminum alloy cage has high fatigue strength, excellent corrosion resistance, high surface hardness and low surface friction coefficient, and exhibits excellent surface lubricity and wear resistance.

Abstract: The disclosure relates to the field of digital pathology imaging technologies, in particular, to a digital pathology scanner for large-area microscopic imaging. The digital pathology scanner for large-area microscopic imaging includes a plurality of microscopic objectives and a plurality of digital image sensors; the microscopic objectives and the digital image sensors are equal in quantity and are fixed relatively in a one-to-one correspondence manner. The digital image sensors are sequentially distributed so as to form a sensor array. The sensor array enables images formed by the digital image sensors to be sequentially distributed without intervals in a second direction when moving in a first direction, wherein the first direction is perpendicular to the second direction.

Abstract: Disclosed are a workpiece and a method for monitoring water content of a lubricant thereof, wherein the monitoring method comprises a water content sensing unit (10) being provided in the workpiece and exposed in a lubricant inside the workpiece, the water content sensing unit (10) and a radio frequency tag (20) being located in one and the same circuit (S1), the electrical property of the water content sensing unit (10) changing along with changes in the water content of the lubricant, and the electrical property including at least one of resistance, inductance and capacitance; determining a correlation between a frequency-related parameter of the radio frequency tag (20) and the water content in the lubricant (S2); acquiring the actual frequency of the radio frequency tag (20) (S3); and according to the correlation and the actual frequency, determining the actual water content of the lubricant (S4).