This device has some advantages, such as low cost, wide frequency, high accuracy and etc.
它具有成本低，频率范围宽，测量精度高等特点。
The high accuracy can be obtained by the method in wide frequency band.
此测量方法可以在一个较宽的频率范围内，获得较高的测量精度。
The key of the technique is accuracy of identified fundamental frequency of each stay cable.
频率法的关键是在于准确地识别出索的基频。
The key of the technique is accuracy of identified fundamental frequency of each stay cable.
频率法的关键是在于准确地识别出索的基频。
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