Abstract: There are provided a method, apparatus (1100, 1200), device, storage medium, and program. The method includes: determining a music template, the music template comprising a plurality of tracks, each track being divided into at least one time period; obtaining a multimedia segment corresponding to each time period of each track from a database according to the music template, wherein the multimedia segment corresponding to each time period of each track comprises audio information obtained by a user playing a track melody corresponding to the time period of the track, and the database comprises a plurality of multimedia segments played by a plurality of users (S702); joining audio information in multimedia segments corresponding to respective time periods of each track respectively, to obtain a track audio corresponding to each track (S703); and generating target music by combining the track audio corresponding to respective tracks (S704).

Abstract: An underneath type railway freight car bogie wheelset radial device has front and rear subframes and two cross-arranged connecting rods that are pinned by round pin connectors. The subframe is a combination structure of the adapter and the lateral arm. The connecting rods are arranged under the bolster to form the underneath bogie wheelset radial structure. The height of the central plane of the connecting rod is lower than the height of the central plane of the subframe adapter surface. The adapter has an adapter surface forming an arc-shaped adapter structure and an adapter connecting arm integrated with the adapter surface structure and vertically arranged at one end of the adapter surface; the subframes are fixed to the adapter by the rivet assembly.

Abstract: A railway self-generating express freight car bogie has a wheel-axle assembly, frame, journal box suspension device, bolster, foundation brake, side bearing, empty/load auto-adjustment equipment, central suspension device, longitudinal traction device, vertical damper and lateral damper. An axle-end generator is connected at the outer end of an axle of the wheel-axle assembly, the rotor part of the axle-end generator is connected to the end bearing of the wheel-axle assembly by the axle-end bolts, and the stator part is connected to the mount of the journal box suspension devices. The bogie is designed according to the zero-wear concept, and a large number of rubber components and hydraulic dampers are used to improve the lateral stability, linear stability and curve passing performance of the car, so that the bogie is highly adaptable to railway lines, and can meet the operating requirements within 160 km/h and reduce the workload of bogie operation and maintenance.

Abstract: A system and a method for fire ground entry control based on internet of things are provided. The system includes a fire ground entry Node subsystem, a fire ground entry LoRa Gateway&Server subsystem and a monitoring and controlling subsystem, where the fire ground entry Node subsystem includes multiple LoRa Node terminals, each user entering a fire ground is equipped with a LoRa Node terminal, and each LoRa Node terminal includes a LoRa antenna and a Wi-Fi antenna; the fire ground entry LoRa Gateway&Server subsystem includes a LoRa Gateway chip, a LoRa Server chip, a LoRa antenna, a Wi-Fi antenna and a battery pack, and the LoRa Gateway chip and the LoRa Server chip are integrated into a whole body; and the monitoring and controlling subsystem monitors the fire ground entry Node subsystem and the fire ground entry LoRa Gateway&Server subsystem.

Abstract: A system and a method for fire ground entry control based on internet of things are provided. The system includes a fire ground entry Node subsystem, a fire ground entry LoRa Gateway&Server subsystem and a monitoring and controlling subsystem, where the fire ground entry Node subsystem includes multiple LoRa Node terminals, each user entering a fire ground is equipped with a LoRa Node terminal, and each LoRa Node terminal includes a LoRa antenna and a Wi-Fi antenna; the fire ground entry LoRa Gateway&Server subsystem includes a LoRa Gateway chip, a LoRa Server chip, a LoRa antenna, a Wi-Fi antenna and a battery pack, and the LoRa Gateway chip and the LoRa Server chip are integrated into a whole body; and the monitoring and controlling subsystem monitors the fire ground entry Node subsystem and the fire ground entry LoRa Gateway&Server subsystem.