所以研究人员使用统计分析来观测星系的位置和形状，从而找出由弱透镜效应造成的微小偏移。
So researchers used a statistical analysis to measure the orientation and shape of the galaxies to find small distortions due to so-called weak lensing.
用假设弱透镜焦距表达式是一个幂级数中的第一项的方法，可以导出相当准确且便于实用的电磁电子透镜物镜焦距公式。
By assuming the weak lens focal length expression to be the first term in a power series a simple and accurate formula can be derived for the objective focal length of a magnetic electron lens.
目前，广泛使用的测量弱吸收的方法有光热偏转技术和表面热透镜技术。
At present, photothermal deflection technology and surface thermal lensing technology are widely applied in weak absorption measurement.
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