Relative bandwidth is a key specification for the medium bandpass infrared filter, which depends on the film structure and its design.

相对带宽是红外中带滤光片重要的指标，主要取决于光学薄膜的膜系结构和具体设计。

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This article describes the structure, principle of operation and experimental study of a new filter medium filter element of spiral coil.

本文介绍了新型过滤介质——螺旋线圈过滤芯的结构、工作原理及实验研究。

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This article describes the structure, principle of operation and experimental study of a new filter medium filter element of spiral coil.

本文介绍了新型过滤介质——螺旋线圈过滤芯的结构、工作原理及实验研究。

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