Under conditions of monochromatic light and a small object, the spherical aberration was the main factor which led to measuring error of focus of thin convex lens.

在单色光、小物条件下，球差是引起薄凸透镜焦距的测量误差的主要因素。

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Using the data obtained during this period, the problems of determining the systematic error of FK_4 catalog and improving the constant of aberration are investigated.

利用这个期间的资料，初步研究了FK_4星表的系统误差和改进光行差常数等问题。

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The sensor can do comparatively precise measurement on the aberration of defocus, astigmatism and so on, with error rates less than 1.

传感器对于离焦，像散等像差模式都可以进行较为准确的测量，误差率都小于1。

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The error was the only aberration in the partnership as Trescothick, displaying the qualities desperately lacking at the top of England's order, pulled a six off Sean Ervine into the netting guarding the construction work on one side of the ground.

BBC: Trescothick & Langer punish Hants