Abstract: The invention relates to a two-bit memory cell structure, and an array architecture and a circuit structure thereof in an in-memory computing chip. The double-bit storage unit comprises three transistors which are connected in series, a selection transistor in the middle is used as a switch, and two charge storage transistors are symmetrically arranged on the two sides of the double-bit storage unit. A storage array formed by the double-bit storage unit is used for storing the weight of the neural network, and multiplication and accumulation operation of the neural network is carried out in a two-step current detection mode. According to the invention, leakage current can be effectively controlled, higher weight storage density and higher reliability are realized, and neural network operation with more practical significance is further realized.

Abstract: The invention relates to a two-bit memory cell structure, and an array architecture and a circuit structure thereof in an in-memory computing chip. The double-bit storage unit comprises three transistors which are connected in series, a selection transistor in the middle is used as a switch, and two charge storage transistors are symmetrically arranged on the two sides of the double-bit storage unit. A storage array formed by the double-bit storage unit is used for storing the weight of the neural network, and multiplication and accumulation operation of the neural network is carried out in a two-step current detection mode. According to the invention, leakage current can be effectively controlled, higher weight storage density and higher reliability are realized, and neural network operation with more practical significance is further realized.

Abstract: The invention relates to the field of mass cultivation of microalgae and specifically relates to a horizontal submerged cover type carbon supplement device and carbon supplement method for cultivating microalgae in an open pond. The horizontal submerged cover type carbon supplement device for cultivating microalgae in an open pond, comprises: one or more than two covers and gas distributors, wherein the gas distributor is arranged at the bottom of the open pond and the cover is arranged above the gas distributor; the cover, in form of a cylinder with openings at both ends, is arranged along the flow direction of the culture solution, the two ends of the cover being a culture solution inlet and a culture solution outlet respectively; the gas distributor is kept away from the culture solution outlet of the cover by more than 40 cm.

Abstract: The invention relates to the field of microalgae culture and specifically relates to a trap-type carbon supplement device and carbon supplement method for cultivating microalgae in an open pond. The trap-type carbon supplement device for cultivating microalgae in an open pond, comprises a trap-type container, a partition plate and a gas distributor, wherein the gas distributor is positioned at the culture solution inlet of the trap-type carbon supplement device; the thickness of the trap-type carbon supplement device on the side of the culture solution inlet is 0.5-2 times of the depth of the culture solution in the open pond; the gap between the lower end of the partition plate and the bottom of the trap-type container is 0.5-2 times of the thickness of the trap-type carbon supplement device on the side of the culture solution inlet; the upper end of the partition plate is higher than the wall of the trap-type container; and the width of the partition plate is matched with the trap-type container.

Abstract: The invention relates to the field of microalgae culture and specifically relates to a trap-type carbon supplement device and carbon supplement method for cultivating microalgae in an open pond. The trap-type carbon supplement device for cultivating microalgae in an open pond, comprises a trap-type container, a partition plate and a gas distributor, wherein the gas distributor is positioned at the culture solution inlet of the trap-type carbon supplement device; the thickness of the trap-type carbon supplement device on the side of the culture solution inlet is 0.5-2 times of the depth of the culture solution in the open pond; the gap between the lower end of the partition plate and the bottom of the trap-type container is 0.5-2 times of the thickness of the trap- type carbon supplement device on the side of the culture solution inlet; the upper end of the partition plate is higher than the wall of the trap-type container; and the width of the partition plate is matched with the trap-type container.

Abstract: The invention relates to the field of mass cultivation of microalgae and specifically relates to a horizontal submerged cover type carbon supplement device and carbon supplement method for cultivating microalgae in an open pond. The horizontal submerged cover type carbon supplement device for cultivating microalgae in an open pond, comprises: one or more than two covers and gas distributors, wherein the gas distributor is arranged at the bottom of the open pond and the cover is arranged above the gas distributor; the cover, in form of a cylinder with openings at both ends, is arranged along the flow direction of the culture solution, the two ends of the cover being a culture solution inlet and a culture solution outlet respectively; the gas distributor is kept away from the culture solution outlet of the cover by more than 40 cm.

Abstract: Disclosed herein is a carbon supply device for supplying carbon dioxide during large scale cultivation of micro-algae in open pond, and its application method and use. The device comprises a trap container in which a partition plate is installed vertically and has a 10-50 cm gap from the container bottom, and the partition plate is higher than the wall of the trap container; and a gas distributor is positioned at the bottom of the container. In use, the trap carbon supply device is embedded in bottom of an open pond, wherein the partition plate is above the liquid level of the culture solution in the open pond such that the culture solution driven by a stirrer flows into the trap carbon supply device from one side thereof, and flows out of the device from the other side thereof, wherein the culture solution is mixed with carbon dioxide at the bottom of the container.

Abstract: Disclosed herein is a carbon supply device for supplying carbon dioxide during large scale cultivation of micro-algae in open pond, and its application method and use. The device comprises a trap container in which a partition plate is installed vertically and has a 10-50 cm gap from the container bottom, and the partition plate is higher than the wall of the trap container; and a gas distributor is positioned at the bottom of the container. In use, the trap carbon supply device is embedded in bottom of an open pond, wherein the partition plate is above the liquid level of the culture solution in the open pond such that the culture solution driven by a stirrer flows into the trap carbon supply device from one side thereof, and flows out of the device from the other side thereof, wherein the culture solution is mixed with carbon dioxide at the bottom of the container.

Abstract: The present invention discloses a fixation structure for a blade body of a planing cutter, wherein the planing cutter comprises a cutter body, a blade body, and a plurality of screw connectors. The cutter body is provided on its outer peripheral surface with a cutter seat used for mounting the blade body on which a blade of hard alloy is welded, a cooperating and positioning structure is provided between the joint surfaces of the blade body and the cutter seat, and the blade body is directly threadedly connected on the mounting seat of the cutter body through a plurality of screw connectors. Such fixation structure is simple and the replacement of the blade body is convenient, and is adapted for flat planing cutters and spiral planing cutters.