空间解析几何。
The equations of caustic curve and its initial curve for a crack illuminated by an oblique incident light beam in reflection arrangement were deduced using the space analytic geometry method.
本文用空间解析几何方法，推导了在一般非平行斜入射光条件下，裂纹体表面所形成的反射焦散线和初始曲线的方程。
The author has Put forward a new viewpoint on the combination of teaching space analytic geometry and cubic geometry.
作者提出了空间解析几何与立体几何教学结合的一种新观点。
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