The efficiency of energy conversion needs to be optimized by adjusting the weight of the counterweight and the radius of curvature at the bottom to ensure that the restoring torque and friction reach a dynamic balance.
The Christmas theme uses red, green, and white as the main colors, while the penguin image needs a black back and a white belly to create a contrast.
Every year at the end of winter, a touch of festive warmth quietly appears in the kitchens of every household—a smiling Santa Claus fridge magnet, either playfully "standing" on the refrigerator door or steadily "supporting" a handwritten shopping list.
Among many fun toys and tabletop ornaments, deer tumblers are beloved for their adorable appearance and magical "unbreakable" properties. No matter how gently you push it, how hard you pat it, or even if you completely knock it over, it will always wobble
As the year draws to a close and the chill winds begin to blow, streetlights are adorned with colorful baubles and pine branches, a small Christmas keychain quietly appears on people's waists or bags—it might be an adorable reindeer, a red apple adorned w
Among the many holiday decorations, a small yet charming item is quietly gaining popularity: the Christmas penguin fridge magnet. Its round body, red Santa hat, and lively, endearing eyes not only add a touch of childlike fun and warmth to the kitchen but