Abstract: A congestion control method, apparatus and system, and a non-transitory computer-readable storage medium are disclosed. The congestion control method, which is applied to a first gateway, may include: monitoring node state information of a second gateway, where the second gateway is a collaboration gateway of the first gateway; and performing at least one of: in response to the node state information indicating a traffic overload of the second gateway, notifying a central gateway of the traffic overload of the second gateway, and sending a traffic collaboration request of the second gateway to an application server; or in response to the node state information indicating a service recovery of the second gateway, notifying the central gateway of the service recovery of the second gateway, and sending a service collaboration revocation request of the second gateway to the application server.

Abstract: The present invention relates to the technical field of earphones and provides a reasonable and feasible firmware upgrade solution for TWS earphones. Disclosed in the present application are a TWS earphone, a charging case, an upgrading method thereof and a storage medium. The method comprises: acquiring an upgrading firmware package sent by a preset terminal by means of a first audio output device; upgrading the first audio output device by using a first upgrading firmware in the upgrading firmware package acquired by the first audio output device; sending a second upgrading firmware in the upgrading firmware package acquired by the first audio output device to a second audio output device by means of a charging case, so as to upgrade the second audio output device by using the second upgrading firmware. The upgrade solution of the present application enables a reasonable and feasible firmware upgrade operation of TWS earphones.

Abstract: A multi-split system and a method and device for adjusting an oil volume of a compressor of a multi-split system. The adjusting method comprises the following steps: recycling oil back to an oil storage tank by controlling a switch unit to turn on and an oil volume adjusting unit to turn off; when a continuous time over which the oil storage tank recycles oil reaches a first pre-set time (t1), controlling the switch unit to turn off and controlling a multi-split system to perform a test run; obtaining, according to a low-pressure piping pressure loss (P1) and a refrigerant flow (Q), a low-pressure piping pipe diameter (D) and a low-pressure refrigerant density (Den), an excess oil volume (Q2) that needs to be recycled, and obtaining, according to the excess oil volume and a maximum oil storage volume (Qz) of the oil storage tank, an oil volume to be expelled (Q3).

Abstract: A gallium nitride high electron mobility transistor including a substrate, a nucleation layer, a buffer layer, a channel layer, a barrier layer, a gate electrode, a source electrode, a drain electrode, and multiple first p-type gallium nitride islands is provided. A second side of the gate electrode is opposite to a first side of the gate electrode. The first p-type gallium nitride islands are respectively disposed between a first side of the drain electrode and the second side of the gate electrode, and the first p-type gallium nitride islands are electrically floating.

Abstract: A manual power pack assembly for an electric power steering (EPS) system includes a motor housing at least partially enclosing a motor and having an outer diameter. The manual power pack assembly also includes a connector plate formed of a material comprising plastic, the connector plate having a first side, a second side, and a cylinder extending from the first side. The manual power pack further includes a metal ring disposed on an inner diameter of the cylinder and in contact with the outer diameter of the motor housing.

Abstract: The present disclosure provides an intelligent explosion-proof table, including a worktable, an explosion-proof box; the worktable has a window passing through in the vertical direction. The explosion-proof box with an open top is arranged under the window of the worktable. A lifting plate which can be moved up and down and a support mechanism for driving the lifting plate to be lifted are provided inside the explosion-proof box. The lifting plate is used for placing a danger source and matches with the window and is capable of being raised into the window.

Abstract: The present disclosure relates a multi-leaf collimator. The multi-leaf collimator may include a plurality of leaf modules. Each leaf module of the plurality of leaf modules may include a leaf configured to shield a portion of beams emitted by a radiation source. The leaf may be movable along a guide rail of the multi-leaf collimator. Each leaf module may also include a drive mechanism including a first drive component and a second drive component. The first drive component and the second drive component may be both connected to the leaf. The first drive component and the second drive component may jointly actuate the leaf to move along the guide rail.

Abstract: The present disclosure generally relates to a multi-leaf collimator. The multi-leaf collimator may include a set of leaves installed in a cavity, each leaf of the set of leaves having a length along a first direction. At least a portion of the set of leaves may extend beyond the cavity along the first direction. The set of leaves may be arranged along a second direction, the second direction being different from the first direction. A length of a target leaf of the set of leaves may be less than a length of a reference leaf of the set of leaves. The target leaf may be located in an end portion of the set of leaves along the second direction. The length of the set of leaves may conform to the shape of a maximum therapeutic radiation field.

Abstract: This application relates to the field of communications technologies, and more specifically, to a technology for establishing an operation and management channel. In a channel establishment method, a base station obtains a connection status of an operation and management channel between a base station and an operation support system OSS server. If the connection status indicates that there is a connection exception on the operation and management channel, the base station obtains a historical channel establishment parameter that is stored in the base station before a current moment and that is used by the base station to establish the operation and management channel with the OSS server.

Abstract: An energy control method for a hybrid bus using a hydrogen fuel battery and a power battery are disclosed. The method includes the following steps: collecting motor power data; selecting an SOC value from a certain range around an average motor power value, and performing interpolation assignment on a pile power range; adding vehicle parking determination; locking a pile variable-load frequency standard, and assessing whether requirements are satisfied; determining SOH state of the battery; and adding an operation of forced pile startup during low SOC. Based on a pile system control unit, BMS and a vehicle control unit (VCU) system, the present invention can designate and optimize an energy control strategy by means of real-time data, and determine the power state of the vehicle through VCU, and add an operation of low-power power supply by the pile during parking and an operation of forced pile startup during low SOC.

Abstract: Embodiments provide a seat connecting device with an adjustable backrest, belonging to the technical field of swivel chairs. In the embodiments, the seat connecting device includes a seat back tightness control assembly including a control handle, a universal joint, a transmission rod, a first bevel gear, a second bevel gear, a lifting part, a mounting seat of the lifting part, and a tightness adjust rod. The present disclosure uses the universal joint to replace the original rope for transmission, improving the response timeliness of the force transmission of the product when adjusting the seat back elasticity; and improving the accuracy and controllability of the seat back elasticity adjustment.

Abstract: A carrier aircraft, comprising: a body for carrying at least one object or passenger; and multiple rotatable fan devices disposed on two sides of said body; wherein an angle of rotation of one of said rotatable fan devices can be changed, such that said carrier aircraft flies along a direction at an angle, said angle being between 0 degrees to 30 degrees.

Abstract: Disclosed is a low-voltage DC power distribution fast switching device. The device includes a positive output terminal electrically connected to a positive pole of a load, and no less than two switching circuits connected in parallel with each other; the switching circuit includes a positive input terminal electrically connected to a positive pole of common negative power supplies, a supplementary diode cluster composed of no less than one diode connected in series, and a thyristor connected between the positive input terminal and the positive output terminal; the positive input terminal is electrically connected to an anode of the supplementary diode cluster and an anode of the thyristor, and the positive output terminal is electrically connected to a cathode of the complementary diode cluster and a cathode of the thyristor.

Abstract: A resource sharing method and apparatus are disclosed. The method includes: A first apparatus notifies a second apparatus of a frequency domain resource of a first initial bandwidth part (BWP) in a candidate shared resource, where the frequency domain resource of the first initial BWP is not shared between the first apparatus and the second apparatus; the second apparatus notifies the first apparatus of a frequency domain resource of a second initial BWP in the candidate shared resource, where the frequency domain resource of the second initial BWP is not shared between the second apparatus and the first apparatus; and the first apparatus notifies the second apparatus of a resource that is in the candidate shared resource and that is expected by the first apparatus to be used for data transmission.

Abstract: The present disclosure discloses an air conditioner controlling method and apparatus, as well as an air conditioner having the same. The method includes: determining that an outdoor heat exchanger of the air conditioner runs in an evaporator state; acquiring a state signal of a refrigerant of an indoor refrigerating unit; and adjusting an opening degree of an electronic expansion valve of an outdoor unit according to the state signal of the indoor refrigerating unit. This method may adjust the opening degree of the electronic expansion valve of the outdoor unit according to the state signal of the indoor refrigerating unit when the outdoor heat exchanger of the air conditioner runs in the evaporator state, thereby effectively improving the reliability of control, broadening the reliable operation range of the system, and reasonably distributing the refrigerant between the indoor refrigerating unit and the outdoor unit under a low temperature working condition.

Abstract: The present disclosure generally relates to a multi-leaf collimator. The multi-leaf collimator may include a set of leaves installed in a cavity, each leaf of the set of leaves having a length along a first direction. At least a portion of the set of leaves may extend beyond the cavity along the first direction. The set of leaves may be arranged along a second direction, the second direction being different from the first direction. A length of a target leaf of the set of leaves may be less than a length of a reference leaf of the set of leaves. The target leaf may be located in an end portion of the set of leaves along the second direction. The length of the set of leaves may conform to the shape of a maximum therapeutic radiation field.

Abstract: The present disclosure relates to a method, a device and a system for transmitting multicast group information. The method includes: receiving, by a first CSE, multicast group information transmitted by an underlying network element, wherein the first CSE includes a CSE where a group is located; and setting, by the first CSE, attributes of multicast group resource according to the multicast group information.