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1·According to real tested data, it builds up CVC cambering curve equation by polynomial regression. This paper discusses practical significance of the equation.

根据实测数据，采用多项式回归方法，建立CVC辊形曲线方程，并探讨了该方程的重要实际意义。

2·This paper discusses the question of crane main girder camber and the pre-cambering curve, introducing camber values stipulated in related crane standards in China and abroad.

本文论述起重机主梁的上拱度及预拱曲线的基本原理，介绍了国内外起重机技术标准中规定的上拱度值。

(1)camber angle外倾角；中心线弯曲角