压电陶瓷执行器的迟滞特性是影响其定位精度的主要因素。
The hysteresis of piezoceramic actuators is the main challenge of its positioning accuracy.
试验表明，本方法能提高提取建筑物的精度，其定位精度较高。
Experiments show that the method can improve the accuracy of building extraction, and that the precision of location is higher.
因为这些数据要早于常规的信心调查，所以可以用其定位经济拐点。
Since the data is available earlier than conventional surveys of confidence, it is useful for spotting economic turning-points.
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