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A concave mirror would project a real inverted image of the silverpoint onto the panel, which van Eyck would trace.

凹面镜把颠倒的实像投射到木板范艾克便可以板子描画。

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As a practical example, an astigmation corrected scanning flat holographio concave grating (SFHCG) is designed and some results of the numerical and optical experiments are given.

像散SFHCG的设计实例和用这块光栅所做的实验结果。

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机智生活百科

For them, the mask is concave and rotates in one direction.

们来说,面具是凹陷的,并且朝一方向旋转。

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生物学基础入门

Red blood cells are tiny by concave disc-shaped cells known as erythrocytes.

红细胞很小,被称为红细胞的凹盘状细胞。

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PBS访谈环境系列

Concave mirrors direct the sun to a middle tube to heat an oil solution.

凹面镜将阳光引导到中管,对油溶液进行加热。

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梦幻橄榄球手

I would, I'd be going down concave over.

我会,我会下凹。

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himym09

You built that big concave glass tower.

你建了座凹面的大玻璃楼。

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半熟的牛排

He flapped across the room, chest concave, shoulders rounded, arms hanging limp, feet wide apart, chin thrust forward.

拍打着穿过房间,胸部凹陷,润,双臂无力地垂下,双脚分开,下巴向前。

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动物逻辑学

They find a concave branch or  stump and lay their egg there.

们找到一凹形的树枝或树桩,并在那里产卵。

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良医

There's a concave deformity in the right atrium.

右心房有凹陷形变。

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潘潘

He and his comrade-in-arms worked at a concave concealment.

的战友们在一处凹的隐蔽处工作。

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经济学人-科技

A concave mirror creates an image from this light using a design pioneered in the 17th century, by Sir Isaac Newton.

早在17世纪,艾萨克.牛顿就开创性的利用这光,让凹透镜产生了一图像。

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西南联大英文教本

The flight of a woodpecker is a succession of dips and rises, a series of concave curves.

啄木鸟的飞行是连续的下降和上升, 一系列凹曲线。

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Crash Course Physics 速成课物理

But that can be corrected by using a concave lens for an eyepiece, like Galileo did.

但这可以通过使用 凹透镜作为目镜来纠正,就像伽利略所做的那样。

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地心游记-The journey to the heart of the Earth

It arose from the concave form of the gallery and the conducting power of the rock.

它源于画廊的凹形和岩石的传导能力。

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TED-Ed(视频版)

Unfold that sheet, and there's a pattern of lines, each of which represents a concave valley fold or a convex mountain fold.

展开那张纸,有一种线条图案,每条线代表一凹谷折或凸山折。

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PBS趣味科普

A narrow source of light is bounced off a concave mirror towards a camera, with a thin metal blade blocking some of the focused light.

窄光源从凹面镜反射到照相机,金属刀片阻挡部分聚焦光。

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Crash Course 综合篇

Diverging lenses have a concave shape and do the opposite of a converging lens, causing rays of light to diverge away from the lens’s axis.

发散透镜具有凹面形状,会聚透镜相反,导致光线从透镜轴发散。

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Crash Course Physics 速成课物理

Diverging lenses have a concave shape and do the opposite of a converging lens, causing rays of light to diverge away from the lens's axis.

间隔透镜具有凹面形状并反射成组的透镜,导致光线从透镜轴散射开。

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Crash Course Physics 速成课物理

While Galileo used a concave lens for his eyepiece, the standard refracting telescope uses a convex, converging lens for both the objective lens and the eyepiece.

伽利略的目镜使用凹透镜,而标准折射望远镜的物镜和目镜都使用凸透镜。

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无名的裘德(中)

They plunged into the concave field on the other side of which rose the village-the field wherein Jude had received a thrashing from the farmer many years earlier.

们跳进了凹陷的田野,在凹陷的田野的另一边耸立着村庄——多年前裘德就是在这里挨了农夫一顿痛打的。

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格列佛游记(原版)

In the middle of the concave side, there is a groove twelve inches deep, in which the extremities of the axle are lodged, and turned round as there is occasion.

凹面中部有一槽,深十二寸,轴端安于槽内,随时可回转。

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