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National Geodetic Control Network of China is an important fundamental scientific engineering project in China.
“2000国家大地控制网”是国家大地测量的重大科学工程项目。
youdao
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National Geodetic Control Network of China is an important fundamental scientific engineering project in China.
“2000国家大地控制网”是国家大地测量的重大科学工程项目。
youdao