其中当四阶累积量函数的两个变量分别在矩阵的对角线方向和偏离对角线方向取值并且第三个变量取零时，得到的矩阵的分析效果最好。
When two parameters of four-order cumulant function choose values of the diagonal direction and the off-diagonal direction of the matrix and the third parameter is zero, we can get the best matrix.
通过统计学中的响应曲面法建立了螺旋铣削过程中切削力的二阶模型，并分析了主轴转速、每齿进给量、轴向和径向切削深度等因素对切削力的影响。
A quadratic model of predicting helical milling force was researched. The effects of spindle speed, feed per tooth, and axial and radial depth of cut were analyzed.
为了求解钢筋与混凝土间滑移量，对黏结滑移基本方程进行了分析，导出了黏结应力-局部滑移相互关系的二阶微分方程。
In order to study the slip between rebar and concrete, the fundamental equations are analyzed and the 2nd order differential equation of the relation between bond stress and local slip are obtained.
利用快速四阶循环累积量算法、时频脊线分析与小波变换相结合的方法，实现了跳频频率和码速率等参数的高精度估计。
They are used to yield accurate estimation for the hop frequencies and hop rate, which are fast 4th-order cyclic cumulants algorithm, time-frequency backbone curve analysis, and wavelet transform.
分析和研究地应力弹性二阶张量场的可视化技术。
The visualization techniques of 3D tensor field in geostress were analyzed and studied.
分析和研究地应力弹性二阶张量场的可视化技术。
The visualization techniques of 3D tensor field in geostress were analyzed and studied.
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