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。
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.
本实用新型的半圆弧形板的内空腔构成蒸气管路，节省材料和安装体积，成本较低。
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