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文献［１］的ｗｈｃ６９是：对于空间不共面ｎ点，至少可确定多少条直线？至少可确定多少条恰好过两点的直线？本文讨论前一问，由于ｎ点不共面，则必有ｎ≥４．设不共面ｎ点按在空间的某种排布，可确定Ｌ（ｎ）条直线，其最小值为Ｌ０（ｎ），我们来讨论Ｌ０（ｎ）的值．...
The whc69 in [1] is: How many lines can be determined for a space with no coplanar n-points? Can you determine at least how many lines are exactly two points apart? This article discusses the previous question. Since n points are not coplanar, there must be n≥4. Suppose no coplanar n points are in some sort of space, we can determine the L(n) straight line, and its minimum value is L0(n). Let’s discuss the value of L0(n). ...