shrunk-onBNC¹⁷³⁹⁹⁵⁺² 基本例句 🌏热线 In this paper problems arising in connection with the contour of the central bore of a shrunk-on disc are discussed a method for selection the optional contour Shape has been suggested. 本文讨论了红套叶轮中心孔型线问题，并提出了一个选择最佳型线的方法。 cnki