"This is a huge milestone in this type of laser research," said Stephen Durbin, a scientist at Purdue University, in an accompanying article in the journal Nature Physics about the diamond mirror.

普渡大学的科学家，斯蒂芬说德宾在《自然物理学杂志》的一篇关于钻石镜的附加文章中说：“这是此种类型的激光研究的重大里程碑。”

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The type of laser used to make the comb is critical to the precision of the ruler.

用来产生光学频率梳的激光的类型对于此频率尺的精度至关重要。

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But another machine in the plant, which USES a laser to scan the passing material, can sort plastic by type and colour with great accuracy.

但是工厂里的另一套设备则不一样了。其利用激光对经过的材料进行扫描，按照塑料的种类和颜色进行分类，且准确率极高。

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Sadly for Xerox, other more nimble companies brought these great ideas to market--the Apple Macintosh, Adobe type fonts, Canon laser printers and 3Com-style local area networks, all of which would appear in the 1980s.

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Instead, physicians and diagnosticians have to print out the digital images on X-ray-type film or laser paper.

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The Light Touch can turn that image into a touch-screen that you can type on or swipe through with the help of a holographic laser projection and infrared sensor at the bottom of the device.

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