An optical fiber is a dielectric (nonconductor of electricity) waveguide made of glass or plastic.
是一种介质(绝缘体电)波导的玻璃塑料。
An optical fiber is a dielectric (nonconductor of electricity) waveguide made of glass or plastic.
是一种介质(绝缘体电)波导的玻璃塑料。
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