Sonic concepts such as grey mapping, white mapping, generalized vector and symbol variable are applied to deal with ths design of crankshaft.

本文将灰色映射、白色映射、广义矢量、符号变量等概念应用于处理曲轴设计问题；

youdao

In this paper a linear estimation problem for a stochastic process which is viewed as the output signal of a linear second-order vector difference equation driven by a white-noise input is considered.

本文考虑在白噪声输入情况下，二阶向量差分方程随机输出信号的滤波估计问题。

youdao