| 1. | His figure looks very funny in the concave mirror
他的样子在凹镜里显得非常可笑。 |
| 2. | The vase is actually made of two parabolic concave mirrors
花瓶其实是由两个抛物面凹镜组成。 |
| 3. | The vase is actually made of two parabolic concave mirrors
花瓶其实是由两个抛物面凹镜组成。 |
| 4. | 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。 |
| 5. | The size of images formed by concave mirrors depends on how far the objects are located from the mirror foci
利用凹镜所看到的镜像，则会随物体与镜面焦点的距离而变化。 |
| 6. | A parabolic concave mirror can converge parallel light rays to its focus , and also collimate light rays that pass through its focus
抛物面凹镜会把平行而来的光线聚集在一点焦点，亦会把源自焦点的光线平行向外反射。 |
| 7. | A parabolic concave mirror can converge parallel light rays to its focus , and also collimate light rays that pass through its focus
抛物面凹镜会把平行而来的光线聚集在一点(焦点) ，亦会把源自焦点的光线平行向外反射。 |
| 8. | 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。 |
| 9. | 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。 |
| 10. | From gillens hairdressers window a composite portrait shows him gallant nelson s image . a concave mirror at the side presents to him lovelorn longlost lugubru booloohoom
隔着吉伦理发店的窗户可以瞥见一帧综合照片16 ，映出纳尔逊的潇洒英姿。 |
