SummaryThis article is a standard of measurement， control survey， topographic survey and other engineering surveying for the content of the About the provisions in the measurement work， accuracy requirements， and its Strive to engineering survey professional point of view as fully as possible the modern definition of cognitive engineering Keywords: leveling; control measurement; topographic survey; digital mapping system; efficiency; era of digital surveying and mapping; GPS-RTK technology满意的话，请及时采纳。
