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单词 In focus
释义

In focus

英语例句库

Telocentric lenses work with a wide depth of field. With a telocentric lens, you can image objects of different distances from the lens and the objects stay in focus.

具端着丝粒的镜头(注:我猜是类似于针孔镜头吧)具有宽阔之景深,以具端着丝粒的镜头,你能够将由镜头不同距离之目标物成像和保持目标物在焦。

原声例句
雅思口语备考指南

Now in focus, what does that mean?

什么叫聚焦呢?

简单心理学

In focus meditation, people direct their attention to a single thing, like their breath or a sound.

在专注冥想中,人们把注意力集中在一件事上,比如他们的呼吸或声音。

雅思口语备考指南

So make sure the picture is in focus.

因此请确保图片处于清晰聚焦状态。

当月 CNN 10 学生英语 2020年11月合集

It's not just presidential votes that are in focus here.

人们关注的重点不仅仅是总统选举。

国家地理(儿童专栏)

Zoom in, focus, and take in the wild world every day.

放大,对焦,每天都能欣赏到野生的世界。

PBS趣味科普

So all colors can be in focus at the same time.

所以所有颜色都可以同时对焦。

时代周刊 (Time)

There is a lot of focus in America today on self-preservation.

如今的美国,大家都非常关注自我保护。

切达科学解读(双语精选)

When it comes to reading, you want everything to be in focus.

当阅读时,你想要所有内容都能对准焦距。

Vox 观点

The first issue is how much of the frame is in focus.

第一个问题是画面有多少是对焦的。

经济学人(汇总)

His mission was still not quite in focus, but his philosophy was.

他的使命还不完全清晰,但他的人生观已经明确了。

历年研究生考试英语阅读真题

The fashion industry knows it has an inherent problem in focusing on material adornment and idealized body types.

时尚产业知道它们注重衣着打扮和理想体型的问题一直存在。

当月 CNN 10 学生英语

But today we shift our focus to the Democratic primary specifically in Michigan.

但是今天我们把注意力转移到民主党初选上,特别是在密歇根州。

哈利波特与火焰杯

Shadowy figures were moving around inside it, none of them clearly in focus.

里面有许多黑乎乎的人影晃来晃去,却都模模糊糊,看不真切。

雅思口语备考指南

Fundamental, and then this one is to make sure the picture is in focus.

很重要,然后这一步就是要确保照片聚焦。

双语版 TED-Ed 演讲精选

This keeps objects in focus when we shift our gaze from far to near.

当我们由远至近转移目光时, 这使物体影像维持清楚。

BBC 听力 2021年2月合集

There has been significant focus on the intelligence in the run-up to the day.

当天活动准备阶段的情报信息一直都是关注的焦点。

Vox 观点

Every part of the model should be in focus so that it looks big.

模型的每个部分都应该对焦,这样它看起来就很大。

Emma的美味英语

Great! Now let's shift the focus in our sentence, in our question a little.

太棒了!现在让我们把句子的重心转移一下,转移到问题上。

CCTV 见闻

The legislative confirmation of the couple's joint that's remains in focus during the third review.

在第三次审查期间,一对夫妇的共同财产的立法确认仍然是焦点。

生活大爆炸 第9季

That's some smart talk from a guy who can't even keep his face in focus.

挺伶牙俐齿,牙尖嘴利,就是脸上焦距老跑掉啊。

中文百科

焦点 Focus (optics)

(重定向自In focus)
部份对焦的影像,除了中间区域以外,其它大部份区域都落在焦点外(失焦)。
在玻璃上的朦胧圈是由计算机产生影像仿真的,使用的软件是POV-Ray。
Eye focusing ideally collects all light rays from a point on an object into a corresponding point on the retina.

焦点,在几何光学中有时也称为像点,是源头的光线经过物镜后汇聚的点。. 然而,焦点只是概念上的点,实际上在空间上有一个范围,称为朦胧圈。这种非理想的焦点也许会导致光学影像的像差,在没有明显的像差下,最小的朦胧圈是艾里盘,是因为光学系统的开口产生绕射造成的。当口径加大时,像差也会变得更为严重,而艾里圈是在大口径下最小的。

一个影像,点像或区域如果能很好的被收歛就是对焦,如果未能良好的汇聚就是失焦。两者之间的边界有时被用来作为模糊圈的定义。

主焦点焦点是球面的焦点:

一个发散(负)透镜或凸面镜不能将瞄准的光线汇聚在一个点上,换言之,焦点是被面镜反射或穿透透镜的光线看起来的发射点。凹的抛物面镜可以将平行瞄准射入的光线反射成看似由焦点发射出来的光;反之,经过焦点抵达抛物面镜的光会被反射成平行的光,可以作为瞄准用的射线。凹的椭圆面镜会将经过其中一个焦点的光线反射至另一个焦点,好像是从那个焦点射出的,而两个焦点都在镜后。一个凹面的双曲面镜会将经过镜前焦点的光反射,而看似是由镜后的焦点直接发射出来的。相反的,在卡塞格林反射望远镜,会将光线汇聚在镜后的焦点上,而这个焦点接近另一面镜子的镜前焦点。

英语百科

Focus (optics) 焦点

(重定向自In focus)
Eye focusing ideally collects all light rays from a point on an object into a corresponding point on the retina.
An image that is partially in focus, but mostly out of focus in varying degrees.
Focal blur is simulated in this computer generated image of glasses, which was rendered in POV-Ray.

In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge. Although the focus is conceptually a point, physically the focus has a spatial extent, called the blur circle. This non-ideal focusing may be caused by aberrations of the imaging optics. In the absence of significant aberrations, the smallest possible blur circle is the Airy disc, which is caused by diffraction from the optical system's aperture. Aberrations tend to get worse as the aperture diameter increases, while the Airy circle is smallest for large apertures.

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更新时间:2025/6/22 20:49:03