其次，分析了逼近模型，推导了单圆弧逼近方法，用这一方法来逼近叶片曲面，提高了逼近速度。
Secondly, analysed the approach model, described circular arc approximation method, approaching blade curved surface with this method and realized raise of the approach speed.
基于三圆弧新型线叶片。
结果表明叶片高应力区域位于榫齿及其圆弧过渡处，并且发现在这些位置存在严重的应力集中情况。
The results show that high stress in serration and its arc transition region, and observed that severe stress concentration in these locations.
对两圆弧法绘制叶片平面投影图中相对液流角的计算误差会造成叶片不连续问题提出修正；
The problem that can be likely the lamina incontinuity is resolved, which is induced by calculating error of relatively liquid angle in the drawing lamina plane by two arc.
对两圆弧法绘制叶片平面投影图中相对液流角的计算误差会造成叶片不连续问题提出修正；
The problem that can be likely the lamina incontinuity is resolved, which is induced by calculating error of relatively liquid angle in the drawing lamina plane by two arc.
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