For example, an arborite kitchen counter top cannot duplicate the mirror reflectivity and natural beauty of granite counters for long.

例如，亚宝来（加拿大著名厨具品牌）厨房柜台顶部就不会有多重镜面反射，且自然之美的花岗岩柜台使用更长久。

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It is shown that, because of the large diameter disc and low reflectivity output mirror of high power disc lasers, its ase is more obvious than that of low power lasers.

计算表明，高功率激光器相比低功率激光器有更大的ASE，原因主要在于高功率激光器采用大直径圆盘和低反射率输出镜。

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In this paper, the characteristics and experimental results of resonators with a variable reflectivity mirror are presented.

本文报导了可变反射率镜激光谐振腔的特点和实验结果。

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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

At this temperature, the mirror was able to flip between high and low reflectivity over a million times a second suggesting that, if it can be kept reliably at this critical temperature, gallium will make a fast (and also small and cheap) optical switch.

ECONOMIST: Optical communications: Swish switches | The

So far, Dr Borra has achieved a reflectivity of 50% (that is, half of the light falling on the mirror is reflected), but he is confident that he will be able to equal the 80% reflectivity of mercury.

ECONOMIST: Mirror, mirror