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绿洲中环中心工程占地面积大、幢数多、主楼高度高，平面由多个不同圆心、不同半径圆弧组成，测量放线难度高。
The Lüzhou Zhonghuan Center project has characteristics such as large area, multiple buildings, high main building, many circle center and arc with different radius, difficulty setting-out.
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