fibre-optical英'faɪbər'ɒptɪkl美'faɪbər'ɒptɪklBNC²³⁶²¹³⁺¹ 基本例句 光纤¹⁰⁰ The paper describes IR fibre-optical material and its features, introduces the developing conditions of fibre-optical material abroad and looks into the developing future of IR optical fibre. 论述红外光纤材料及其特性,介绍国外研制红外光纤的进展情况,探讨其发展前景。 cnki