如果一个体积足够大的星体从一个距离很远的恒星前面经过，那么会产生透镜效果，使那个恒星的光线产生弯曲或变形，这样就能很清楚的看到这个星体。
If a large object passes in front of a more distant background star, it may act as a lens, bending and distorting the light of that star so that it may appear to brighten significantly.
得益于它们的重量，MACS星系就像一个巨大的宇宙镜头，能放大，变形和弯曲经过它们的任何光，和引力透镜的效果一样。
Because of their heft, the clusters act like giant cosmic lenses, magnifying, distorting and bending any light that passes through them - an effect known as gravitational lensing.
对于大口径精密投影光刻制版镜头来说，透镜的应力变形和中心误差对整个系统的成像质量有较大影响。
For big aperture's precision photolithographic plate-making lenses, the stress distortion and centering errors of lenses can make a bad effect on imaging quality.
由于透镜传输时间延迟效应（PTD），飞秒激光脉冲经过空间滤波器产生脉冲波前变形。
Owing to the PTD effect in the lenses of spatial filter, large temporal front distortion of femtosecond pulses occurs in the spatial filter.
阐述了抑制塑料透镜变形所采用的注射-压缩成型技术的特点、成型过程及其模具设计的要点；
The characterteristic, molding process of injection-compression molding and the key points of mould design were described.
阐述了抑制塑料透镜变形所采用的注射-压缩成型技术的特点、成型过程及其模具设计的要点；
The characterteristic, molding process of injection-compression molding and the key points of mould design were described.
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