PTC, an engineering services company, acquired the rights to MathCAD in 2006.
PTC是一家工程设施公司，于2006年收购了MathCAD的股权。
MathCAD combines a large library of functional capability including calculus, Laplace transforms, Bessel functions, statistics, and financial functions.
MathCAD组合了一个庞大的功能库，包括微积分、拉普拉斯变换、贝塞尔函数、统计和财务函数。
According to the theory of spring design, equal step cone screw press springs were designed and calculated by using MathCAD and technology of composed stiffness.
在分析圆柱螺旋弹簧尺寸公差的可靠性条件和刚度的基础上提出了一个计算圆柱螺旋弹簧尺寸公差的方法。
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