Inner arc and carry arc of the blade have been tested by the model in processing steam turbine blade.
汽轮机叶片制造中，叶片叶型的内弧、背弧形状通常是使用样板来检验的。
2
An inner hollow cavity of the semicircle arc plate of the utility model is comprising of a steam tube, with advantages of saving material and installment column, and low cost.