urban control survey
... 城市测量urban survey 城市控制测量urban control survey 城市地形测量urban topographic survey ...
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本文还讨论了无定向导线测量用于城市建筑区及隐蔽地区控制测量的特点，指出这种方法的实用价值和应注意的问题。
It has also discussed the characteristic of control survey of non-directional traverse in urban buildings and concealing terrains and pointed out the practical value and problems of this method.
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