The laser beam passing through the focusing systems gets an facula, which consists of main spot and sidelobe on the focus plane.

由于光的衍射作用，使通过聚焦系统的激光束入射到特定靶面成一光斑（主光斑） ，而在主光斑以外还有次级光斑圈（旁瓣）。

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Electron optical aberration theory for angularly wide and transversely large electron beams in electromagnetic focusing systems with curvilinear axes has been further developed.

本文研究了宽束大物面电磁聚焦系统弯曲轴电子光学象差理论。

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Most number systems, then, are the by-product of two key factors: the human capacity for language and our inclination for focusing on our hands and fingers.

因此，大多数数字系统都是两个关键因素的意外结果：人类的语言能力及我们对手和手指的关注倾向。

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focusing on countries where mobile phone use is skyrocketing and where clinics and hospitals are not encumbered by entrenched systems and procedures.

VOA: standard.2010.02.24

Processes were created to link systems while focusing on quality, effectiveness, and efficiency.

WHITEHOUSE: Developing an Action Plan for Success

But you can lead organic, new, effective approaches to innovation in large systems by focusing on how you mix, rather than what goes in.

FORBES: Who Will Be The Next Iron Chef Of Innovation?

Within two years, the pair had turned the company profitable largely by focusing on infection control, specifically systems that help keep diseases from spreading throughout hospitals and other medical campuses.

FORBES: Hiding In Plain Sight, Swedish Industrialist Carl Bennet Joins Billionaires' Club