Abstract: A network topology generation method includes: obtaining original coordinate information of each topology node in a first topology diagram, where the original coordinate information includes a first coordinate of each topology node in the first topology diagram, and topology nodes in the first topology diagram include a first node, a second node, and a third node; and generating a second topology diagram, where the second topology diagram corresponds to a topology diagram obtained by scaling the first topology diagram, a second coordinate of the second node is obtained using a second coordinate of the first node as a reference point, and a second coordinate of the third node is obtained using the second coordinate of the second node as a reference point.

Abstract: Disclosed are a method and electronic device for determining a faulty state of a storage device. A first time length of a first access to a set of blocks of a storage device is determined. Then, the first time length of the access and a threshold time length are compared. If the first time length exceeds the threshold time length, it is determined that the blocks are in a potential faulty state.

Abstract: A network topology generation method includes: obtaining original coordinate information of each topology node in a first topology diagram, where the original coordinate information includes a first coordinate of each topology node in the first topology diagram, and topology nodes in the first topology diagram include a first node, a second node, and a third node; and generating a second topology diagram, where the second topology diagram corresponds to a topology diagram obtained by scaling the first topology diagram, a second coordinate of the second node is obtained using a second coordinate of the first node as a reference point, and a second coordinate of the third node is obtained using the second coordinate of the second node as a reference point.

Abstract: A unidirectional or bidirectional sand dispensing device, including a discharge port (10), the discharge port includes a lower plate (11) and an upper plate (12), the upper plate is provided above the lower plate, an included angle between a horizontal plane and a straight line where an endpoint of a free end of the upper plate and an endpoint of a free end of the lower plate are located is a leakage angle (13), that is to say, a particulate material forms an inclined plane between the upper plate and the lower plate, and an included angle between the inclined plane and the horizontal plane is the leakage angle, which can be adjusted by changing relative positions of the upper plate and the lower plate. The direction of an opening of the sand passing passage is opposite to a moving direction during the sand dispensing operation.

Abstract: A unidirectional or bidirectional sand dispensing device, including a discharge port (10), the discharge port includes a lower plate (11) and an upper plate (12), the upper plate is provided above the lower plate, an included angle between a horizontal plane and a straight line where an endpoint of a free end of the upper plate and an endpoint of a free end of the lower plate are located is a leakage angle (13), that is to say, a particulate material forms an inclined plane between the upper plate and the lower plate, and an included angle between the inclined plane and the horizontal plane is the leakage angle, which can be adjusted by changing relative positions of the upper plate and the lower plate. The direction of an opening of the sand passing passage is opposite to a moving direction during the sand dispensing operation.

Abstract: Disclosed are a method and electronic device for determining a faulty state of a storage device. A first time length of a first access to a set of blocks of a storage device is determined. Then, the first time length of the access and a threshold time length are compared. If the first time length exceeds the threshold time length, it is determined that the blocks are in a potential faulty state.