• The purpose of this paper is to explore the definition of pitch surfaces. The interconnection is expounded for all kinds of power-driven gears.

    本文的目的探讨面的定义文中阐明各种传动齿轮内在联系

    youdao

  • The purpose of this paper is to explore the definition of pitch surfaces. The interconnection is expounded for all kinds of power-driven gears.

    本文的目的探讨面的定义文中阐明各种传动齿轮内在联系

    youdao

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