A red highlight LED was used as quasi-monochromatic light source for analyzing the diffraction property of an axicon in quasi-monochromatic light.

为了分析准单色光照射轴锥镜的衍射特性，用红色高亮发光二极管作为准单色光源。

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There was a brief thaw in relations when the Cold War ended, because with the Red Navy gone the U.S. Navy needed to highlight its relevance to fighting ashore, but the more common pattern is for the Navy to constantly question the requirement for Marine assets like vertical-takeoff jets and maritime prepositioning ships (which store warfighting supplies in likely areas of conflict).

FORBES: Gates Challenges Marine Corps' Mission

But Nick Clegg did highlight his party's differences and flag up his readiness to do battle on some red-line issues.

BBC: Lib Dem conference: Clegg keeps it lean