2021-10-04【Math】圆锥与圆相交2021-10-04 本文已影响0人 持刀的要迟到了 https://math.stackexchange.com/questions/2368523/find-two-points-and-one-angle-so-that-cone-intersects-the-xy-plane-in-the-para/2369432#2369432
