求两条异面直线间的距离,一般都是设法将其转化为求互相平行的线、面(二异面直线之一平行于过另一直线的平面),或两面(分别过二异面直线的两个平行平面)之间的距离,以求问题的解决。下面仅就棱长为a的正方体内异面直线之间的距离略谈一、二。 To find the distance between two different straight lines, we usually try to convert them into lines or surfaces that are parallel to each other (one plane of two straight lines that are parallel to the other line), or two surfaces (there are two different surfaces. The distance between the two parallel planes of the line, in order to solve the problem. The following is a brief discussion of the distances between the straight lines with different lengths in the square of the length a.