The belts, made of polyurethane and shot through with carbon cords to give them tensile strength, are more expensive than chains and can be installed only on frames adapted to their use.
3
据基特曼所说,碳纤的传导性和“特殊的层结构使车子骑行时产生的能量能直接储存在车架里。”
Carbon fiber's conductivity and "special layer structure make it possible for the energy from driving to be stored directly in the frame," Kittman says.