8results about How to "Improve rollback efficiency" patented technology

The invention discloses a semiconductor structure and a manufacturing method thereof, a radio frequency device and electronic equipment, and aims to solve the problem of low rollback efficiency. The active region structure is arranged on a substrate, the active region structure comprises a barrier layer and a channel layer which are arranged in a stacked mode, electrode layers are arranged on the active region structure in a stacked mode, electrodes comprise a first electrode and a second electrode which are arranged in a spaced mode, and the first electrode and the second electrode are both connected with the barrier layer; wherein the width of the interface of the channel layer and the barrier layer in the direction parallel to the current is gradually reduced in the direction perpendicular to the current direction, and the flowing speed of electrons is gradually increased along with the reduction of the width of the interface in a conducting state, so that the electrons can reach the saturation drift speed more quickly, and the saturation current is further achieved; the knee point voltage is reduced, and the rollback efficiency of the semiconductor structure is improved.

The invention discloses a TBM complete machine rollback priority rail dismounting construction method. The method comprises the steps that a transportation rail from the tail end of TBM equipment to a tunnel opening is dismounted; muck is removed from the tail end of the TBM equipment to the cave mouth, meanwhile, the circulation process is executed till the TBM equipment returns to the cave mouth, and the circulation process comprises the steps that a10, a transportation track at an equipment bridge is dismantled; a20, the transportation track dismantled in the step a10 is laid on the tunnel bottom, where muck is removed, of the tail of the TBM equipment, and the transportation track is connected with a transportation track at the bottom of the TBM equipment; a30, whether muck residues exist between the tail end of the supporting shield and the front end of a transportation track at the bottom of the TBM equipment or not is checked, and if yes, the residual muck is cleaned; and a40, the TBM equipment is controlled to retreat to set the stroke. Before the whole TBM retreats, the track from the tail of the TBM to the inside of the tunnel is preferentially and integrally dismantled at a time, auxiliary slag removal can be carried out by entering the tunnel through small equipment, and the retreating construction efficiency is greatly improved.

The utility model discloses a bone sawing machine convenient to feed, which belongs to the technical field of food processing equipment and comprises a machine frame, a working face and a saw blade driven by a motor, a sliding rail for guiding the working face to slide close to the saw blade is fixedly arranged on the machine frame, and a receding groove is formed in the working face. A safety plate sliding along the receding groove and an operation piece are arranged on the working face, the safety plate and the operation piece are of an L-shaped structure to form a material clamping space in a surrounding mode, a plurality of side plate spikes and bottom plate spikes are fixedly arranged on one side of the material clamping space, and the included angle between the safety plate and the operation piece on one side of the material clamping space can be reduced through the safety plate and the operation piece. According to the bone sawing machine convenient to feed, in the process that an operator returns food by translating the operating piece, the operator enables the food to be far away from the saw blade on the premise that the operator does not make contact with the food, the operator does not need to do redundant hand actions, the returning efficiency is high, and safety is achieved.

A virtualized desktop data rollback control method, apparatus and device, and a storage medium, relating to the field of virtualized desktop control, comprising: controlling a virtualized desktop client to store target desktop data including historical desktop information and historical personalized information corresponding to a historical virtualized desktop to a local target storage area; when the to-be-virtualized desktop client receives new desktop information issued by the virtualized desktop server, the virtualized desktop client is controlled to store the new desktop information to a local target storage area, so that the virtualized desktop client performs desktop updating based on the new desktop information; when the desktop data rollback requirement exists, the virtual desktop client is controlled to delete the new desktop information in the local target storage area and is controlled to update the desktop based on the target desktop data, so that the desktop data rollback is realized, and the user experience is improved; wherein in the whole desktop updating period, the historical mirror image file corresponding to the historical desktop information is in an undeleted state.

The invention relates to a returning mechanism and a cutting and suturing device. The rollback mechanism comprises a support, a transmission part, a driving assembly and a rollback assembly. The transmission part is slidably connected to the support and comprises a plurality of transmission teeth. The driving assembly comprises a driven gear and a motor, and when the driven gear is located at the meshing position, the driven gear is meshed with the multiple transmission teeth; when the driven gear is in the disengagement position, the driven gear is in disengagement connection with the transmission teeth; the rollback assembly comprises a connecting piece and a rollback gear, the connecting piece is rotationally connected to the support, one end of the connecting piece is rotationally connected with the rollback gear, the other end of the connecting piece is rotationally connected with the driven gear, and the joint of the connecting piece and the support is located between the rollback gear and the driven gear; when the return gear is controlled to be switched from the first position to the second position through the connecting piece, the driven gear is switched from the meshing position to the disengagement position, and the return gear is meshed with the multiple transmission teeth. The rotation of the return gear is converted into the movement of the transmission part, so that the transmission part returns, and the return efficiency of the transmission part is improved.

The present invention is applicable to the field of wireless communication technology, and in particular, relates to a power amplifier circuit and a radio frequency chip, including a power amplifier circuit, an input matching network, a power amplifier, a linear bias circuit and a power detection circuit; the power detection circuit is used to obtain the output power envelope signal of the power amplifier, and output the output power envelope signal to the linear bias circuit, and the linear bias circuit is used to provide a bias voltage for the power amplifier according to the output power envelope signal. Compared with the prior art, the present invention can adjust the bias state of the power amplifier according to the size of the radio frequency power, and can make the power amplifier enter a low bias state in the low power area to improve the back-off efficiency, and appropriately raise the bias in the high power area to ensure that the power amplifier has sufficient power output to meet the linear requirements, thereby maximizing the performance of the power amplifier, and improving the back-off efficiency of the power amplifier while meeting the linearity index.

This invention belongs to the technical field of tunneling equipment, specifically disclosing a tunneling machine main unit and a tunneling machine. The main unit of the tunneling machine includes a cutterhead and a shield. A jacking mechanism is hinged to the front partition of the shield via a universal hinge structure. The jacking mechanism includes a jacking body and a jacking drive device for driving the jacking body to move forward to jack the tunnel face. The cutterhead is provided with a clearance hole for avoiding the jacking body. The tunneling machine includes the aforementioned main unit. This invention achieves universal swing of the jacking mechanism through the universal hinge structure, enabling the jacking body to jack the tunnel face at different angles, providing the shield with a counter-thrust force in any direction (up / down / left / right), assisting the shield in adjusting its attitude in different directions. If shield jamming occurs, regardless of the location of the jam, the jacking mechanism can provide the shield with the necessary counter-thrust force, thereby solving the problems of shield attitude adjustment and main unit retraction difficulties.

This invention relates to a retraction mechanism and a cutting and sewing device. The retraction mechanism includes a support, a transmission component, a drive assembly, and a retraction assembly. The transmission component is slidably connected to the support and includes multiple first transmission teeth and multiple second transmission teeth. The drive assembly includes a driven gear and a motor. When the driven gear is in the meshing position, it is connected to the multiple first transmission teeth. When the driven gear is in the disengaged position, it is disengaged from the multiple first transmission teeth. The retraction assembly is driven by the driven gear and includes a drive rod and a drive gear. The drive rod is rotatably connected to the support, and the drive gear is driven by the drive rod. When the drive gear is controlled by the drive rod to switch from a first position to a second position, the driven gear switches from the meshing position to the disengaged position, and the drive gear is connected to the multiple second transmission teeth. By converting the rotation of the drive gear into the movement of the transmission component, the retraction of the transmission component is achieved, thus improving the retraction efficiency of the transmission component.