1. Reduced blade count: Longer blades reduce the number of blades in a steam turbine, thus reducing drag loss and vibration noise.
2. Increased power output: Longer blades increase the time fluid spends passing through them, fully utilizing the turbine's output capacity and increasing power output.
3. Reduced weight and size: Longer blades reduce the weight and size of the steam turbine, saving material costs.
4. Improved reliability and service life: Using longer blades improves the reliability and service life of the steam turbine.