optical fiber diffraction grating
optical fiber diffraction grating
光纤衍射光栅
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The key problem of FBG sensor study is the optical fiber diffraction grating signal demodulation, namely, the detection of small shifting of wave length.
研究光纤光栅传感器的关键问题是光纤光栅的信号解调，即波长微小移位的检测问题。
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