Besides, the amount of polar group is so large in the copolymer prepared by the method in the invention that the copolymer can be used as transparent optical product.

此外，通过所述方法制备的共聚物的极性基团的量很大以至于该共聚物可被用于透明的光学产品。

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Optical fibres - Part 2-20: product specifications - Sectional specification for category A2 multimode fibres.

光学纤维。第2 - 20部分：产品规范。A 2类多模光纤分规范。

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We have a number of advanced optical lens production line and production workshops to ensure product quality and quantity of both.

我们有多条先进的光学镜片生产线及生产车间，保证产品质与量的并重。

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Nortel Leader with full optical product range.

FORBES: Young guns...

Li Fei, analyst for Dagong Global Credit Rating Company and author of the bond rating report, told FORBES that optical fiber preform is the upstream product of the optical fiber industry and requires high technical content in its manufacturing techniques.

FORBES: Technology Breakthrough Makes Chinese Fiber Optics Entrepreneur A New Billionaire

The product also includes high-quality optical and stereo cables.

ENGADGET: Creative reveals Sound Blaster ZxR, Zx, and Z PCI-Express sound cards, pumps up the volume