通过比较后得出，采用相同导程叶片用一个胎具压制的设计方法简单，成形准确，提高了经济效益。
Conclusion from comparing shows that this design method is simply, shape formation is accurate and the economical benefit is lifted.
通过比较后得出，采用相同导程叶片用一个胎具压制的设计方法简单，成形准确，提高了经济效益。
Conclusion from comparing shows that this design method is simply, shape formation is accurate and the economical benefit is lifted.
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