说明：  横断面计算绘图默认是按照纵断自然标高桩号（纵断自然标高文件中的桩号）来生成的，地形图提取自然标高间隔是按照桩号标注设置中的标注间隔来提取数据的，如果设的是20m，那么横断面数据就按照每20m来提取。此时，横断面自然标高提取时的间隔就和横断面计算绘图时的间隔不一致。是很有可能不同的，所以会产生这样的歧义。
(The calculation drawing of cross section is generated by the default of longitudinal section natural biaogaozhuanghao ( chainage ), the natural elevation interval is extracted according to the mark interval in the chainage notation setting, if set is 20 m, the cross section data is extracted every 20 m. At this point, the interval between the natural elevation extraction and the cross section calculation is inconsistent. It is very likely that different, so the ambiguity will arise.)