Abstract: A distributed structure of a movable platform and a movable platform are provided. The movable platform includes: a platform body, a driving part, a plurality of signal modules divided into at least two groups, where each group of the signal modules is concentrated in one area; at least two control modules, where each control module is arranged in the area where a corresponding group of the signal modules is located, and each control module can directly obtain signals of the corresponding group of the signal modules in its area; and an signal transmission device, which is provided between the control modules and is configured to transmit signals between the control modules.

Abstract: A control method includes in response to a mode switch operation of a user, switching to a first control mode or a second control mode, in response to a position adjustment of an operation member of a control terminal, adjusting a position or an attitude of an aerial vehicle in a control direction corresponding to the operation member, in the first control mode, in response to the operation member being at a preset first initial position, controlling the aerial vehicle to maintain the position or the attitude unchanged in the control direction, and in the second control mode, in response to the aerial vehicle being in an initial status in the control direction and the operation member being in a preset second initial position different from the first initial position, controlling the aerial vehicle to maintain the position or the attitude unchanged in the control direction.

Abstract: Protection circuitry configured to protect an electrical load from both overvoltage and overcurrent and includes a recovery period timer configured to set a recovery time. The recovery time allows a system, including a power supply, voltage regulator, protection circuitry and electrical load to dissipate heat and reset components. The protection circuitry is configured to monitor downstream performance of the electrical load and disconnect upstream power based on a downstream failure or other performance characteristics. The protection circuitry may include a downstream overvoltage sensing circuit that controls a current source. The current source injects current into an overcurrent protection loop in the protection circuitry that includes the configurable recovery period timer. In this manner both an overvoltage and an overcurrent event may take advantage of the configurable recovery period timer without the need for a separate time delay circuit.

Abstract: A retainer is a ring around a central axis and includes an upper surface, a lower surface, an outside wall surrounding the central axis, and an inside wall surrounding the central axis. The outside wall is located at a side of the inside wall facing away from the central axis, the inside wall and the outside wall are respectively connected between the upper surface the lower surface. A plurality of grooves is formed on the outside wall and arranged at intervals along a circumferential direction of the outside wall. Each of the plurality of grooves communicates with the upper surface and the lower surface. The disclosure also provides an optical lens module having the retainer, and an electronic device having the optical lens module.

Abstract: Protection circuitry configured to protect an electrical load from both overvoltage and overcurrent and includes a recovery period timer configured to set a recovery time. The recovery time allows a system, including a power supply, voltage regulator, protection circuitry and electrical load to dissipate heat and reset components. The protection circuitry is configured to monitor downstream performance of the electrical load and disconnect upstream power based on a downstream failure or other performance characteristics. The protection circuitry may include a downstream overvoltage sensing circuit that controls a current source. The current source injects current into an overcurrent protection loop in the protection circuitry that includes the configurable recovery period timer. In this manner both an overvoltage and an overcurrent event may take advantage of the configurable recovery period timer without the need for a separate time delay circuit.

Abstract: A hydraulic gentle vibration speed-enhancing drilling tool has an upper joint, a power assembly, a flow regulating valve assembly and a force transmission assembly. The upper end of an outer shell of the power assembly is in threaded connection with the upper joint of the drilling tool, at the lower end thereof, internal steps having outer octagonal structure are arranged to limit the lower joint; a middle section of the lower joint is of outer octagonal structure, with the lower end in threaded connection with an adapter; and the power assembly is of turbine set structure or screw-type mud motor structure for producing driving force under the action of hydraulic force and driving an upper rotating shaft. The upper rotating shaft is arranged on a load bearing ring, and the lower end thereof is in threaded connection with a lower rotating shaft.

Abstract: A hydraulic gentle vibration speed-enhancing drilling tool has an upper joint, a power assembly, a flow regulating valve assembly and a force transmission assembly. The upper end of an outer shell of the power assembly is in threaded connection with the upper joint of the drilling tool, at the lower end thereof, internal steps having outer octagonal structure are arranged to limit the lower joint; a middle section of the lower joint is of outer octagonal structure, with the lower end in threaded connection with an adapter; and the power assembly is of turbine set structure or screw-type mud motor structure for producing driving force under the action of hydraulic force and driving an upper rotating shaft. The upper rotating shaft is arranged on a load bearing ring, and the lower end thereof is in threaded connection with a lower rotating shaft.

Abstract: A simulation system for a current collecting surface of a C-shaped contact rail includes a double-headed rail and a limiting plate. A current collecting end surface of the double-headed rail has a same current collection area as an actual C-shaped contact rail. The limiting plate matches the inner contour of the C-shaped contact rail. A constructed test line can simulate the current collecting status of the C-shaped contact rail. The limiting plate and the existing double-headed rail are combined, and compared with reproduction of the C-shaped contact rail, the manufacturing cycle is short, the costs are low, and it is applicable to the test line.

Abstract: A simulation system for a current collecting surface of a C-shaped contact rail includes a double-headed rail and a limiting plate. A current collecting end surface of the double-headed rail has a same current collection area as an actual C-shaped contact rail. The limiting plate matches the inner contour of the C-shaped contact rail. A constructed test line can simulate the current collecting status of the C-shaped contact rail. The limiting plate and the existing double-headed rail are combined, and compared with reproduction of the C-shaped contact rail, the manufacturing cycle is short, the costs are low, and it is applicable to the test line.

Abstract: A method, device, and system for providing public email are disclosed. The method may include receiving an email. In response to receiving an email marked as public, the method may include acquiring information about public recipients. The method may also include sending the email marked as public to the public recipients and recipients specified in the email marked as public. According to one embodiment, email marked as public can be provided conveniently and timely without increasing the overburden of the email system.

Abstract: Disclosed is a large-scale submersible sewage pump assembly that includes a pump and a pump seat installation structure, wherein the pump seat installation structure has a concrete installation base layer, and a pump seat for installing the pump. The pump seat is fixed to the pump installation layer, and the bottom of the pump is directly connected onto the pump seat. The pump has a motor cooling apparatus, wherein the cooling apparatus has an internal cooling apparatus installed inside the case of the motor, and an external cooling apparatus installed outside the motor. The pump seat installation structure can stably mount and support the large-scale submersible sewage pump, preventing potential safety hazard during running of the pump.

Abstract: Disclosed is a large-scale submersible sewage pump, comprising a pump and a pump seat installation structure, wherein the pump seat installation structure comprises a concrete installation base layer, and a pump seat for installing the pump. The pump seat is fixed to the pump installation layer, and the bottom of the pump is directly connected onto the pump seat. The pump comprises a motor cooling apparatus, wherein the cooling apparatus comprises an internal cooling apparatus installed inside the case of the motor, and an external cooling apparatus installed outside the motor. The pump seat installation structure can stably mount and support the large-scale submersible sewage pump, preventing potential safety hazard during running of the pump.

Abstract: A method, device, and system for providing public email are disclosed. The method may include receiving an email. In response to receiving an email marked as public, the method may include acquiring information about public recipients. The method may also include sending the email marked as public to the public recipients and recipients specified in the email marked as public. According to one embodiment, email marked as public can be provided conveniently and timely without increasing the overburden of the email system.

Abstract: This invention relates to a method for preparing a sucrose-6-ester.

Abstract: A sensing member for detecting total cholesterol of a blood sample is disclosed, which includes: a working electrode and a counter electrode respectively formed on a first substrate and a second substrate, wherein, an opening is formed in one of the first and second substrates corresponding in position to the electrode for allowing the blood sample to pass through; a dielectric layer formed on one of the surfaces of the first and second substrates and exposing the electrode and end connector such that the end connector can be electrically connected to an electronic device used for applying electric voltage; a reactive pad disposed between the working electrode and the counter electrode and containing an reactive reagent, wherein the reactive reagent comprises an electron transport material, an enzyme capable of reacting with the analyte and generating a current corresponding to the concentration, and a buffer solution; and a separating pad disposed on the opening for removing interfering materials from the bl