Fiber grating is another great breakthrough in optical communications area following the progress of EDFA. Its appearance makes all complex optical networks possible.

光纤光栅作为光通信继掺铒光纤放大器之后的又一次突破，它的出现使许多复杂的全光网络通信成为了可能。

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Good thermal stability, good optical performance, high mechanical strength and good appearance smoothness.

热稳定性好、光学性能好、机械性能优良、产品外观平整度好。

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According to the optical performance of appearance quality of paper, the detection of paper formation have been explored by using computer vision and some methods of image process.

根据纸张表面质量的光学性能，运用计算机视觉和图象处理的一些基本知识，对纸张匀度的检测方法进行研究和探索。

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The Venus flower basket, for example, a kind of deep-sea sponge, has spiny skeletal outgrowths that are remarkably similar, both in appearance and optical properties, to commercial optical fibres, notes Joanna Aizenberg, a researcher at Lucent Technology's Bell Laboratories in New Jersey.

ECONOMIST: REPORTS

The HC-V520 also makes an appearance with its 50x optical zoom full HD and 5-axis OIS. If you want some 3MOS action with manual ring, EVF and level gauge action then the HC-X920 is the one for you.

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