Disclosed is freely varifocal glasses, which comprises zoom lenses and a focusing device.

自由变焦眼镜，是由可变焦镜片和调焦装置构成。

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The report talks about the principles, structure, accuracy analyses, main technical data, characteristics, adjustment and application of a new type internal focusing device for centring.

本报告介绍了一种新型内调焦对心器的原理、结构、精度分析、主要技术参数、特点、仪器的调整及使用。

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In this article, we analyze how device control works in both operating systems, examining everything from architecture to system calls and focusing on the differences.

本文分析两种操作系统的设备控制原理，探究从架构到系统调用的各个方面，重点比较二者差别。

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This year, DHS is focusing its message on that glorious little device that inspires adults to line up in front of Apple stores like preteen girls on the opening day of a new Twilight movie: the smartphone.

FORBES: The Department of Homeland Security Wants You To Be More Careful With Your Phone

Instead of focusing on the book lovers who bought the first Kindle, Amazon seems intent on creating a device that may actually appeal to a wider, less bookish set of customers.

FORBES: Magazine Article

And Apple and Amazon took over the media business by focusing on the relationship they have with the customer, delivering the right content to the right device at the right time.

BBC: Viewpoint: How Sony slipped back