What are the excerpts from the 222 Winter Olympics?

1. The torch "Flying" of Beijing 222 Winter Olympics and Paralympics was officially released on the first anniversary of the countdown to the Winter Olympics, and the torch "Flying" of Beijing 222 Winter Olympics and Paralympics made a stunning appearance in the Water Cube of the National Aquatics Center.

2. The moment when Beijing becomes the first "Double Olympic City" in Olympic history is approaching. The surface of the torch gradually transited from Xiangyun pattern to paper-cut snowflake pattern from bottom to top, which engraved the steps of the city from Summer Olympics to Winter Olympics and witnessed the Olympic complex planted in people's hearts since the 28 Beijing Olympic Games. ?

3. Han Zongjie, a senior engineer of China Aerospace Science and Technology Corporation who participated in the research and development of the torch, introduced that many technical problems such as flame color and stability, high-pressure hydrogen storage and safe utilization of hydrogen energy were solved during the development of the torch. The torch has high safety and reliability, can resist wind by 1 levels, and at the same time, it also takes into account the requirements of lightweight and miniaturization shape matching. ?

4. "Lightweight"-compared with aluminum alloy with the same volume, carbon fiber composite is lighter by more than 2%; "Solid"-this material has the characteristics of high strength, corrosion resistance, high temperature resistance, friction resistance and ultraviolet radiation resistance; "Beauty"-Three-dimensional weaving molding technology with international advanced level is applied to weave high-performance fibers into such a beautiful whole with complex shapes.

5. Another technical highlight of Feiyang is that the torch shell is made of lightweight and high-temperature resistant carbon fiber, and the torch burning tank is also made of carbon fiber. Huang Xiangyu, a carbon fiber expert and deputy general manager of China Petrochemical Shanghai Petrochemical Co., Ltd., said that the shell made of carbon fiber and its composite materials presents the characteristics of "light, solid and beautiful".