n the heart of bustling metropolises—where skyscrapers overshadow sidewalks and grocery store shelves brim with imported produce—a quiet movement is taking root. Urban foraging, the practice of harvesting edible plants from city landscapes, has evolved from a niche hobby into a meaningful rebellion

Gear transmission is a core component in modern mechanical systems, widely applied in automotive, aerospace, wind power, construction machinery, robotics, and other fields. Gear dynamics studies the vibration, noise, dynamic load, and fatigue characteristics of gears during operation, which directly

Gear contact pattern, as a critical visual indicator of gear pair meshing performance, directly reflects the load distribution on tooth surfaces. It exerts a decisive influence on the reliability, vibration and noise characteristics, and service life of gear transmission systems. This article elabor

Intensive shot peening is a cold working process that bombards the metal surface with a high-speed stream of projectiles to introduce residual compressive stress into the surface layer of components. Through this strengthening process, the fatigue strength of gears can be significantly improved, mak