passive devices短语¹⁴⁴⁹⁷²⁺² 基本例句 无源器件 Fused-taper optical fiber devices are the most typical and basic optical passive devices, which are widely used in the field of fiber communication and fiber sensor. 熔锥型光纤器件是全光器件中最具代表性，也是构成其它器件的一种基础器件，在光纤传感和光纤通信中得到了广泛使用。591-lw