A new conclusion is put forward, in which the smooth degree of the data row can be enhanced by means of the arc-hyperbolic sine function transformation.
提出了“利用反双曲正弦函数变换提高数据列光滑程度”的新结论，获得了递增时间序列改善的自回归预测新方法。
The hydrodynamic lubrication performance of rectangle, inclined plane, circular-arc, triangle, multi-arc and sine surface texture was researched with CFD method based on N-S equation.
采用基于N - S方程的CFD方法，研究矩形、斜面台阶形、圆弧形、三角形、多圆弧形以及正弦形织构表面的动压润滑性能。
YCB arc gear pumps are mainly gear, KCG axis, the pump body, cover, the axial bearing, sealing etc. Using double circular-arc gear tooth sine curve.
主要有齿轮、轴、泵体、泵盖、轴承套、轴端密封等组成。齿轮采用双圆弧正弦曲线齿形制造。
YCB arc gear pumps are mainly gear, KCG axis, the pump body, cover, the axial bearing, sealing etc. Using double circular-arc gear tooth sine curve.
主要有齿轮、轴、泵体、泵盖、轴承套、轴端密封等组成。齿轮采用双圆弧正弦曲线齿形制造。
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