Abstract: A dredging device for dredging a pipe is provided including: a carrying frame, adapted to connected to a pipe; a shaking dredging unit including a first shaking plate and a second shaking plate, and the first shaking plate and the second shaking plate are arranged within the pipe; and a driving unit, connected to the carrying frame. The driving unit is connected to the first shaking plate and the second shaking plate for driving the first shaking plate and the second shaking plate to reciprocate to approach or move away from each other.

Abstract: An acousto-optic Q switch, a resonant cavity, and a pulse laser device for improving laser device power. The acousto-optic Q switch includes: a transparent optical element configured to form a phase grating that diffracts laser; a piezoelectric transducer arranged at one end of the transparent optical element and configured to convert electrical energy into ultrasonic energy to form the phase grating in the transparent optical element; and an absorber arranged at the other end of the transparent optical element to absorb the ultrasonic energy.

Abstract: The present disclosure discloses a container positioning method and apparatus based on multi-line laser data fusion, the method comprising: acquiring point cloud data of at least two multi-line laser radars, and performing point cloud data fusion according to a coordinate system relationship between the at least two laser radars; performing clustering of scanning lines according to the fused point cloud data, and acquiring an edge point of a top surface or a side surface of a target container according to the clustered scanning lines; acquiring a contour of the top surface or the side surface of the target container according to the edge point of the top surface or the side surface of the target container to determine a central point and a heading angle of the target container so as to determine a position of the target container.

Abstract: A semiconductor device including a substrate having a NMOS region and a PMOS region; a metal gate extending continuously along a first direction from the NMOS region to the PMOS region on the substrate; a first source/drain region extending along a second direction adjacent to two sides of the metal gate on the NMOS region; a second source/drain region extending along the second direction adjacent to two sides of the metal gate on the PMOS region; a first contact plug landing on the second source/drain region adjacent to one side of the metal gate; a second contact plug landing on the second source/drain region adjacent to another side of the metal gate; and a third contact plug landing directly on a portion of the metal gate on the PMOS region and between the first contact plug and the second contact plug.

Abstract: The present invention provides a wireless communication method of an electronic device, wherein the wireless communication method includes the steps of: establishing at least a first link and a second link with other devices; transmitting a frame via the first link, wherein the frame comprises a non-inheritance element comprising at least one element identity with at least one identifier of the second link that is not inherited from the first link.

Abstract: The present disclosure relates to a stator of a magnetic levitation bearing, a magnetic levitation bearing, and a compressor. The stator of the magnetic levitation bearing includes a stator core (4), a stator coil (5) wound around the stator core (4), a housing (2) sleeved outside the stator core (4) and having a clearance fit or a transition fit with the stator core (4), and a potting component (3) filled between the housing (2) and the stator core (4).

Abstract: The present disclosure discloses a container positioning method and apparatus based on multi-line laser data fusion, the method comprising: acquiring point cloud data of at least two multi-line laser radars, and performing point cloud data fusion according to a coordinate system relationship between the at least two laser radars; performing clustering of scanning lines according to the fused point cloud data, and acquiring an edge point of a top surface or a side surface of a target container according to the clustered scanning lines; acquiring a contour of the top surface or the side surface of the target container according to the edge point of the top surface or the side surface of the target container to determine a central point and a heading angle of the target container so as to determine a position of the target container.

Abstract: A circuit board includes a conductive metal layer, at least one insulating layer, at least one thermally conductive insulating layer and a heat dissipation element. The conductive metal layer is mainly used to transmit electronic signals. The insulating layer is connected to the conductive metal layer. The thermally conductive insulating layer is sandwiched between the conductive metal layer and the insulating layer, and thermally contacts the conductive metal layer, and is used for thermally conducting the heat of the conductive metal layer. The heat dissipation element is in thermal contact with the thermally conductive insulating layer, and is used to conduct the heat of the thermally conductive insulating layer to the outside through a heat dissipation channel.

Abstract: The present invention provides a control method of an electronic device, wherein the control method includes the steps of: enabling a wireless charging mode; generating a packet, wherein the packet comprises content that is not recognized by other electronic devices to issue an acknowledgement; and wirelessly transmitting the packet, and continuously retransmitting the packet.

Abstract: A semiconductor device including a substrate having a NMOS region and a PMOS region; a metal gate extending continuously along a first direction from the NMOS region to the PMOS region on the substrate; a first source/drain region extending along a second direction adjacent to two sides of the metal gate on the NMOS region; a second source/drain region extending along the second direction adjacent to two sides of the metal gate on the PMOS region; a first contact plug landing on the second source/drain region adjacent to one side of the metal gate; a second contact plug landing on the second source/drain region adjacent to another side of the metal gate; and a third contact plug landing directly on a portion of the metal gate on the PMOS region and between the first contact plug and the second contact plug.

Abstract: A dredging device for dredging a pipe is provided including: a carrying frame, adapted to connected to a pipe; a shaking dredging unit including a first shaking plate and a second shaking plate, and the first shaking plate and the second shaking plate are arranged within the pipe; and a driving unit, connected to the carrying frame. The driving unit is connected to the first shaking plate and the second shaking plate for driving the first shaking plate and the second shaking plate to reciprocate to approach or move away from each other.

Abstract: The invention discloses a method of improving a wire structure of a circuit board, comprising the following steps: providing a multi-layer circuit board, including an inner circuit and a surface circuit; forming an opening to expose the inner circuit; forming a first circuit layer in the opening; removing the first circuit layer, the first conductive circuit, and the surface circuit on the multi-layer circuit board and removing a part of the first circuit layer in the opening; forming an adhesion promoter layer in the opening and on the multi-layer circuit board; forming a second conductive circuit on the adhesion promoter layer and on the first conductive circuit layer in the opening; forming a photoresist layer on the second conductive circuit layer; forming a second circuit layer in the opening and on the multi-layer circuit board, and removing the photoresist layer and a part of the second conductive circuit.

Abstract: A combustible ice efficient combustion system comprises a combustible ice storage unit and a combustion unit, the front end of the furnace of the combustion unit is provided with a combustor, the rear end of the furnace of the combustion unit is connected with a flue gas main pipe, the combustor is provided with a first fuel gas inlet, a second fuel gas inlet, a combustion-supporting gas inlet and a flue gas outlet, the first fuel gas inlet is provided with a combustion nozzle, the combustion nozzle is provided with a first gas inlet, a second gas inlet and a mixed gas outlet, the first gas inlet is connected with the combustible ice storage unit through a high-pressure natural gas pipeline, the second gas inlet is connected with an air source, and the mixed gas outlet is connected with the first fuel gas inlet of the combustor.

Abstract: A backup battery system includes a charging-discharging module and a battery module. The charging-discharging module includes a first connector and a first engaging member. The battery module is detachably connected to the charging-discharging module and includes a second connector corresponding to the first connector and a second engaging member corresponding to the first engaging member. When the battery module is connected to the charging-discharging module, the first connector is joined with the second connector and the first engaging member is fixed to the second engaging member.

Abstract: A semiconductor device includes a first metal-oxide semiconductor (MOS) transistor on a first substrate, a first interlayer dielectric (ILD) layer on the first MOS transistor, a second substrate on the first ILD layer, and a second MOS transistor on a second substrate. Preferably, the semiconductor device includes a static random access memory (SRAM) and the SRAM includes a first pull-up device, a second pull-up device, a first pull-down device, a second pull-down device, a first pass-gate device, a second pass-gate device, a read port pull-down device, and a read port pass-gate device, in which the read port pull-down device includes the first MOS transistor and the read port pass-gate device includes the second MOS transistor.

Abstract: A light-emitting device according to the present invention comprises: a mounting board; a plurality of light-emitting elements that each include a supporting substrate and a semiconductor structure layer, the supporting substrate being disposed on the mounting board, and the semiconductor structure layer being formed on the supporting substrate and including a light-emitting layer, a wavelength conversion member that covers the plurality of light-emitting elements above the light-emitting elements and converts a wavelength of a light emitted from the light-emitting layer; a translucent member that covers a lower surface of the wavelength conversion member and covers the semiconductor structure layer on the supporting substrate; and a resin member filled between the plurality of light-emitting elements, the resin member being formed of a resin material containing particles having a light reflectivity.

Abstract: A lithium-based grease and the preparation method thereof are provided. The raw materials for preparing the lithium-based grease include in parts by weight: 75-88 parts of base oil, 0.5-2.5 parts of antiwear agent, 0.1-1.5 parts of antirust agent, 0.1-1.5 parts of antioxidant, 5-25 parts of lubricant, 5-15 parts of thickening agent, and 0.6-2.0 parts of saponifying agent. The raw materials also include hydroxyl compound-containing modified graphene containing quaternary ammonium salt or aromatic ring. The grease has good colloid stability and mechanical stability, can greatly improve the antiwear property. More than that, the grease has excellent oxidation resistance, and can significantly shorten the reaction time of the saponification, reduce the reaction temperature of the saponification.