难检字字典在线查询

汉语拼音：āo miàn jìng

球面镜的一种，反射面为凹面，焦点在镜前，当光源在焦点上，所发出的光反射后形成平行光束。简称凹镜。

1. 亦称“ 凹镜 ”。边厚中薄之镜，为球面镜的一种。反射面凹进去，能把平行的光反射后聚在镜面前的一点上，这点叫焦点。如果光源在焦点上，所发出的光经反射后就形成平行的光束。

• and the terahertz wave detector is positioned on the light path behind the concave mirror and is used for receiving scanning signals.

  太赫兹波探测器，位于凹面镜后的光路上，接收扫描信号。

• Put a solar cell at the focus of that mirror and you have an inexpensive solar-energy collector.

  将一块太阳能电池置于凹面镜的焦点上，就可以做成廉价的太阳能收集器了。

• The said lens is perpendicular to output beam. Each concave mirror possesses identical radius of curvature.

  每小块方形的镀有全反膜的凹面镜具有相同的曲率半径。

• In addition, pairs of birds Mohist shadow, the umbra and penumbra objects, concave and convex imaging phenomena, are also made many studies.

  此外，墨家对飞鸟的影子、物体的本影和半影、凹面镜和凸面镜的成像现象等，也都作了许多研究。

• in physics, he makes such experiments as concave mirror imagery and sound resonance;

  物理学方面做过凹面镜成像试验和声音共振实验。

• The reflex of the concave mirror and formation of image

  凹面镜的反射和成像原理

• Spherical concave and convex mirrors

  球面凹面镜，球面凸面镜

• A concave mirror creates an image from this light

  凹面镜从星光中创造图像