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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范艾克便可以在描画。

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PBS访谈环

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

将阳光引导到中管,对油溶液进行加热。

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每天听一点新鲜事

As the sun burned down over Olympia, the actress play a high priestess .Use the sun's rays and a parabolic mirror to light the torch.

当太阳照耀古奥林匹亚,女演员扮演最高女司,利用太阳光和点燃圣火。

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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.

窄光源从反射到照相机,金属刀片阻挡部分聚焦光。

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魔法师

Four concave mirrors were hung within it, and there was an altar of white marble, surrounded by a chain of magnetic iron.

挂着四, 还有一个白色大理石, 周围环绕着一条磁铁链。

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21-初高-每日听力

Then he placed heating lamps on one side of the paper and concave mirrors on the other, with the mirrors directed toward the area.

然后,他在纸张一侧放置加热灯,在另一侧放置,镜子对准该区域。

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