To prove his point, he took a series of portraits, using the same model's facial expression and the same lighting - but each time changing the lens.
为了证明他的观点，他利用相同的照明条件，为一位模特的同一面部表情拍摄了一组肖像照，但是每照一张就更换一种镜头。
In theory, the device converts electronic signals into ever-changing displays projected onto the contact lens and visible to the wearer, perhaps like a movie subtitle.
理论上，这种装置将电子信号转换成隐形眼镜上瞬息万变的信息展示给使用者，这有点像电影里的字幕。
A horse focuses its eyes by changing the Angle of its head, not by changing the shape of the lens of the eye, as humans do.
马通过转动头的角度使眼睛聚焦，不像人那样通过改变晶状体的形状聚焦。
It is shown that by changing the focal length of focal lens and the distance between the axicon and the lens, the center of dark of the bottle beams can be altered effectively.
这些结果表明，改变聚焦透镜的焦距和聚焦透镜到轴棱锥间的距离以及光阑半径，可有效地改变局域空心光束的暗中空区域。
When I want to take a close-up with the most recent, and expensive, DSLR, I have to go to the trouble of changing the lens first.
当我想用最新最贵的数码单反机拍近景时，我不得不先很麻烦地换镜头。
Secondly, the eyepiece and the Fourier transform lens are designed to minimize the secondary color by the ways of changing glass.
接下来，设计高光谱成像仪的准直镜和成像镜，通过更换玻璃，降低二级光谱色差。
A horse focuses its eye by changing the Angle of its head, not by changing the shape of the lens of the eye, as humans do.
马通过转动头的角度使眼镜聚焦，不象人那样通过改变瞳孔的形状聚焦。
A new method of changing the size of bottle beam using a popular sphere lens telescope system is proposed.
提出了一种利用普通球面透镜望远系统来变换局域空心光束尺寸的新方法。
A new method of changing the size of bottle beam using a popular sphere lens telescope system is proposed.
提出了一种利用普通球面透镜望远系统来变换局域空心光束尺寸的新方法。
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