由于技术和价格的限制，有限范围波长变换的研究和稀疏节点波长变换的研究应运而生。
The technology of manufacturing the wavelength converter with limited-range conversion range and the sparse distribution of the wavelength converter are under research.
由于技术和价格的限制，有限范围波长变换的研究和稀疏节点波长变换的研究应运而生。
The technology of manufacturing the wavelength converter with limited-range conversion range and the sparse distribution of the wavelength converter are under research.
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