Yixing HBM introduced USA technology, Advanced production equipment to ensure the first-class product quality. High precisionmonitor and control system.
Then, the paper essentializes the two key problems in the course of building a three-dimensional monitor network: the optimum geometrical graph and the precision distance surveying.
同时，简要分析了建立高精度的测边三维监测网的两个关键问题，即最优构形和精密光波测距。
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To ensure the construction precision and structure safety of the Wenhui Bridge, engineers built a construction control measure network and adopted total stations to monitor cable tower offsets.