The invention is a tiny object detecting system with long focus distance and large view field, which belongs to target detecting technology field.

一种长焦距大视场无活动部件的微型目标探测系统，属于目标探测技术领域。

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Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.

由于 P 波和 S 波以不同但相当恒定的速度传播，它们到达的间隔与到震源或初始破裂点的距离成比例地增加。

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Standard replacement lenses have no ability to focus, so the wearer is often stuck with excellent distance vision but must use glasses for reading.

标准的替换晶体没有聚焦的能力，因此使用者经常拥有绝佳的远距离视力但必须使用眼镜才能阅读。

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In other words, if you look too closely at a picture or if you stand too far away from it you don't see it clearly it's out of focus but if you achieve just the right distance from it, it comes into focus.

换句话说，如果你站得离一幅图画太近,或太远都无法看清它,它在焦距之外,但是如果你站在合适的位置上，焦距就对准了，画就清晰了。

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This means the rear lens elements are as close as possible to the sensor, reducing the back focus distance of each lens to the minimum possible, thus achieving high resolution from edge to edge.

ENGADGET: Fujifilm grows X-series mirrorless lineup with 16.3-megapixel X-E1

Marathons now account for about two-thirds of all road racing prize money, which has encouraged the most talented distance runners to focus on the distance from the start of their careers.

WSJ: Breaking the Two-Hour Marathon Barrier

We'd also imagine regulators will take a close look at Apple's App Store policies in general, but from a distance looks like the focus is on mobile advertising: both Apple and Google have made aggressive moves into the space in recent months, and both have come under regulatory scrutiny.

ENGADGET: Apple under preliminary antitrust investigation over iPhone, triggered by complaint from Adobe