模方的方法

The method of mold square

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1
本文介绍了一种利用慢度曲面判断三方晶系晶体纯模轴的方法。
A method of obtaining the pure mode direction of the trigonal system by the slowness surfaces is introduced.
2
另一方面，同步在采用“模-数-模”方法实现的模拟信号置乱加密通信中非常重要，必须在信息信号中加同步头信号。
On the other side, synchronization in "analog-digital-analog" scramble communications is very important, and the synchronizing signal must be inserted into information signals.
3
入口截面不消耗剪切功率，然后用上界定理与曲面积分方法首次得到了用余弦模拉拔方棒时变形力的解析解。
Then with the upper-bound theorem and the surface integral an analytical solution of the drawing stress was first obtained.

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