两路线不能穿同一管内，电线和暖气、热水、煤气管之间的平行距离不应小于300mm，交叉距离不应小于100mm。
Two routes can not be worn in the same tube, wire and heating, hot water, gas pipe between the parallel distance should not be less than 300mm, the cross should not be less than 100mm.
例如，可以确定两个图形之间的距离，执行空间集合操作，如合并或交叉图形，获取一个 linestring 的长度。
For example, you can determine distances between two geometries, perform spatial set operations like unioning or intersecting geometries, and retrieving the length of a linestring.
最后，屋顶结构设计为76交叉的拱门，超过55英尺的跨越距离。
The final roof structure features 76 crisscrossing arches, with many spanning more than 55 feet.
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