For the P-SV wave travel time, it also can be expressed exactly by a three-term Taylor series in short or moderate spreads.
SV波的传播时间也可用三项泰勒展式表达，在中等及短排列长度时可达到一定精度。
2
To obtain desired wave characteristics of composite laminate, the varying rate of eigenvalue with respect to the thickness change is approximated by the second order Taylor expansion.
采用一种特征值反求形式的方法用来近似层状复合板的波动特性修改。
3
The traditional method of calculation for the acceptance parameters by Taylor expansion in three wave interactions is only suitable for the condition of small acceptance parameters.