The orientation measurement is a precise and detailed job, and it affects directly the route alignment and the control of elevation system.
导线测量是一项精密而细致的工作，直接影响到路线的定线和高程系统的控制。
After measuring and debugging, the structure of elevation axis control system is founded out.
通过测试分析和调试，确定了俯仰轴伺服控制系统的结构。
The results of experiments show the structure control increase the precision of elevation axis control system, and satisfies well engineering...
实验结果表明变结构控制方法提高了俯仰轴伺服系统的控制精度，满足了工程实际的要求。
The results of experiments show the structure control increase the precision of elevation axis control system, and satisfies well engineering...
实验结果表明变结构控制方法提高了俯仰轴伺服系统的控制精度，满足了工程实际的要求。
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