The probe consists of three parallel glass fibers: the intermediate one for transfer of emitting light, and two others for receiving reflecting signals.
光探头包含三根光纤，中间一根用于发射光，上、下各一根接收粒子反射光。
It consists of light emitting diode, an optical fiber probe, and two photodetectors.
该光纤式振动计由发光二极管、光纤探头和两个光子探测器组成。
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