narrow band fiber loop mirror 窄带光纤环形镜
ultra-narrow bandwidth optical mirror 超窄带反射镜
narrow mirror
狭窄的镜子
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The pump beam had a large effect on the reflectivity of the mirror, but only over a narrow range of temperatures.
ECONOMIST: Optical communications: Swish switches | The
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