凹面镜 meaning in English
concave lens
concave mirror
concavemirror
Examples
- I examined three key technical properties of this proposed concave - mirror projector
我检验了凹面镜投射的三项关键技术特性。 - The diameter of a sphere is four times the focal length of a concave mirror cut from it
凹面镜如果是从圆球上切下来的，圆球的直径会是凹面镜焦距的四倍。 - The ancient greeks used lenses or concave mirrors to concentrate the sun ' s rays and burning glasses were also used by mexican aztecs and the chinese
古希腊人使用透镜或凹面镜聚集太阳光线并且这种方法也被墨西哥阿芝台克和中国人使用。 - Unlike concave mirrors , the convex kind produces right - side - up virtual images , smaller than the original object , which cannot be projected onto a canvas
与凹面镜相反，凸面镜呈现的虚像不会颠倒，影像比原来的物体要小，且无法投射到画布上。 - Renaissance craftsmen , moreover , would have faced severe technical challenges in silvering and sealing a concave mirror , which required the application of hot tar and pitch on the outside of the glass
文艺复兴时代的工匠在涂银与装置凹面镜时，还要面对更多艰难的技术挑战，那需要在玻璃表面施予滚烫的焦油与沥青。