相关单词近义词 arccos 反余弦, arccosine 反余弦, arc cosine 反余弦临近词inverse FDI, inverse, inverse Forier's transform, inverse drerivative action, inverse serial correlation, inverse parabolic equation, inverse transient analysis, inversed ratio ventilation, inverse eigenvalue problem, inversely as the square of, inverse matrix calculation, inverse coefficient matrix 返回 inverse cosine