These provided an important theoretical base for lengthening the life of the impeller and the control cage.

这为进一步提高分丸轮、定向套等抛丸器易损件的寿命提供了重要的理论依据。

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These provided an important theoretical base for lengthening the life of the impeller and the control cage.

这为进一步提高分丸轮、定向套等抛丸器易损件的寿命提供了重要的理论依据。

youdao