TCA测量机器人对大坝外部变形监测，具有精度高、工效快、获取的数据准确可靠等优点。
The TCA measurement robot is characterized by high accuracy, good efficient and reliance and nicety of acquired data in dam outer deformation monitoring.
利用它对大型工程建(构)筑物进行外部变形观测，具有精度高、工效高、所获取的数据准确可靠等优点。
It has the advantages of high precision and high work efficiency in deformation observation for large buildings and structures.
分析表明：天文找北系统结构简单，精度高，对外部误差源不敏感。
It is showed that the north-finder has simple structure, high precision, and is not sensitive to outer error sources.
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