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系统地介绍了一种双波长光纤温度传感器的原理、结构及应用。其突出优点是采用波长窄带比较技术，抗干扰能力强，测量精度高。
The principle, structure and application of a dual wavelength optical fiber temperature sensor are systematically introduced. Its prominent advantage is the use of narrow-band wavelength comparison technology, anti-interference ability, high measurement accuracy.