Abstract: A dual-power-supply dual-mode pure electric passenger vehicle includes two power batteries: One is used as a standby power battery and adopts a charging mode; and the other is a power battery that can be loaded and removed at any time and adopts a battery swap mode. Both power batteries can be powered separately. Under normal circumstances, the power battery for battery swap is preferably adopted. The power battery for the battery swap is connected to the vehicle through a connector, the connector includes a high-voltage electrical interface, a low-voltage electrical interface and a communication interface. When the power of the power battery for the battery swap is used up, the charged power battery is used.

Abstract: An internal combustion engine having an independent combustion chamber comprises a combustion chamber (1), an air inlet system (2), a material feeding system (3), and a working system (4). The air inlet system (2) and the combustion chamber (1) are connected together and configured to transport a compressed air to the combustion chamber (1). The material feeding system (3) and the combustion chamber (1) are connected together and configured to transport a fuel to the combustion chamber (1). The combustion chamber (1) has a fixed volume and has no movable wall such as a piston. The fuel continues to be burned in the combustion chamber (1) to generate a high-temperature and high-pressure gas, and chemical energy of the fuel is converted into internal energy of the high-temperature and high-pressure gas. The working system (4) and the combustion chamber (1) are connected together. The piston (21) of the working system (4) works to convert the internal energy of the gas into a mechanical energy.

Abstract: An automatic classification method for flow cytometry includes characterizing cells or particles as a vector based on at least two-path optical signals generated when the cells or particles pass through an irradiated area one by one, calculating a distance between the effective cells or particles, in which a shorter distance indicates a higher similarity between the two cells or particles, clustering the cells or particles with high similarity into the same class, continuing to cluster similar cells or particles into the same class until the effective cells or particles are clustered into a number L of classes which should be contained in a sample and is determined based on a measuring principle. This method automatically classifies particles accurately and efficiently.