所述介电材料可界定用于光信号的路径，且可包裹在护套中，所 述护套有助于保持所述光信号沿着所述路径。
The dielectric material can define a path for the optical signal, and can be wrapped in a sheath which aids in keeping the optical signal along the path.
所述介电材料可界定用于光信号的路径，且可包裹在护套中，所 述护套有助于保持所述光信号沿着所述路径。
The dielectric material can define a path for the optical signal, and can be wrapped in a sheath which aids in keeping the optical signal along the path.
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