正矢（英文：Versine、Versed sine），在三角函数之中被定义为versin θ= 1 - cosθ，值域在0～2之间。
如果你想更深入的了解上帝，把自己献给上帝(《正矢》1 - 2章)。
If you want to know God's perfect and acceptable will for you, give yourself to God (see verses 1-2).
利用积分方程方法以及半空间并矢格林函数的快速算法对埋地目标体矢量电磁散射进行正演计算。
Forward electromagnetic scattering by buried objects is computed with the integral equation method and efficient algorithm for half-space dyadic Green's functions.
本文讨论了这类非互易旋光张量下的波矢面及简正模的基本形式。
This paper discussed the basic form of the wave-vector surface and normal mode of nonreciprocal gyrotropic dielectric tensor.
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