Maintain, repair and calibrate precision measuring instruments such as dial indicators, fixed gauges, height gauges and other measuring devices.
维护，修理和校准千分表，固定计，高度计和其他测量设备等精密测量仪器。
With high overlap images, the intersection angles will augment, and the height precision will be improved.
按多目视觉的理论，利用大重叠影像增大交会角，提高高程精度。
The accuracy of Orthometric Height will be directly affected by ellipsoidal height precision during GPS height transformation, therefore, the detection of gross error is very important.
GPS高程转换中，大地高的精度将直接影响转换后正常高的精度，为此大地高的粗差探测是比较重要的一个环节。
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