has certain wavelength
有一定的波长
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Occupying certain advantageous features such as simple structure, low cost and the high-speed wavelength demodulation, this system has a broad application in the flow and measurement field.
该系统具有结构简单、低成本和波长解调速度快的优点，在流量计量领域有广阔的应用前景。
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