瞬时流动平均方向角与正反向间歇流动因子成线性变化。
Flow mean angles varied linearly with the upstream-downstream intermittency.
讲弹簧机械正常的归零作用，同时要观察屏幕右上角的三角是否有反向动作。
Stresses the normal return of the mechanical spring, while the upper right corner of the screen to observe whether the triangle has a reverse action.
给出了洛匈棱镜反向应用时的分束角的精确表达式，并与正向应用时的分束角作了比较；
This article given the accurate description of reverse splitting angle of the Rochan prism in detail, and compared to the forward splitting angle;
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