Elevation survey and control of underwater structure is common task in near shore engineering.

沿岸工程施工经常遇到水下构筑物高程精确测量和控制的问题。

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Elevation survey and control of underwater structure is common task in near shore engineering.

沿岸工程施工经常遇到水下构筑物高程精确测量和控制的问题。

youdao