Abstract: Provided are a corrosion-resistant oxide dispersion strengthened steel and a method for preparing the corrosion-resistant oxide dispersion strengthened steel. The corrosion-resistant oxide dispersion strengthened steel includes in percentage by mass: Cr at 8.0 wt %-10.0 wt %, Al at 4.0 wt %-6.0 wt %, Ce at 0.2 wt %-0.8 wt %, Y at 0.2 wt %-0.4 wt %, O at 0.05 wt %-0.3 wt %, C less than or equal to 0.0016 wt %, and the balance of Fe.

Abstract: Provided are a corrosion-resistant oxide dispersion strengthened steel and a method for preparing the corrosion-resistant oxide dispersion strengthened steel. The corrosion-resistant oxide dispersion strengthened steel includes in percentage by mass: Cr at 8.0 wt %-10.0 wt %, Al at 4.0 wt %-6.0 wt %, Ce at 0.2 wt %-0.8 wt %, Y at 0.2 wt %-0.4 wt %, O at 0.05 wt %-0.3 wt %, C less than or equal to 0.0016 wt %, and the balance of Fe.

Abstract: A data transmission method and a communication apparatus to improve transmission timeliness. In a wireless local area network, one channel transmission opportunity is obtained by an access point AP through contention. The AP sends service data to a station STA, and the STA feeds back a first data frame in which an error occurs in the service data to the AP. The AP sends scheduling information on a downlink channel to notify the STA of a retransmission resource unit used for retransmission of the first data frame, and retransmits the first data frame on the retransmission resource unit. Correspondingly, the STA receives the first data frame on the retransmission resource unit.

Abstract: A duct stent being capable of carrying the subminiature radioactive particle source is mainly used for the inside radiation therapy of metaphase or terminal pancreatic cancer and bile duct cancer, and has drainage function. The duct stent consists of a tubular drainage tube (1) and fixation portions (2) which are face to face with two ends of the drainage tube (1) and can fix the stent to prevent the stent from moving. The lumen of the drainage tube (1) is a drainage cavity (1.1) for draining the pancreatic juice or the bile. A particle passage (1.2) is provided in the tube wall of the drainage tube (1). The inside diameter of the particle passage (1.2) matches with the outer diameter of the subminiature radioactive particle source.