The 17th century map-maker claimed 26, 600 miles of road was surveyed in the course of preparing the national road atlas, the first of its kind in any country in western Europe.
这位17世纪的地图绘制家据称在准备绘制全国地图册时，勘测了26600英里的公路长度，这本地图册在同类作品中是西欧最为古老的。
For research of operation mode of the reservoir, the aerial topographic map was surveyed once again by the Yellow River Design Institute in 1995.
为了满足水库运用方式研究的需要，黄委会设计院于1995年5月航测了水库1：1万地形图。
For research of operation mode of the reservoir, the aerial topographic map was surveyed once again by the Yellow River Design Institute in 1995.
为了满足水库运用方式研究的需要，黄委会设计院于1995年5月航测了水库1：1万地形图。
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