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。

There was also concave mirrors since antiquity, but especially in the early modern period, they got a little bit better.

自古以来就有凹面镜，但在早期现代时期，它们有了些许提升。

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，女演员扮演最高女祭，利用太阳光和凹面镜点燃圣火。

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，金属刀部分聚焦光。

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

里面挂着四面凹面镜， 还有一个白色大理石祭坛， 周围环绕着一条磁铁链。

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，在另一侧放置凹面镜，镜子对准该区域。

There are other lens and mirror combinations in which you could have the image come into a concave mirror and the mirror could be tilted and one could look at it through a weak convex or concave lens.

还有其他透镜和镜子组合方式，其中图像可以进入凹面镜，镜子可以倾斜，人们可以通过一个较弱凸透镜或凹透镜来观察它。