求翻译：本文首先对环状起伏的面型误差进行了函数描述，然后选用远场发散角和斯特列尔比作为光束质量评价因子，数值仿真分析了环状起伏的面形误差对光束质量的影响。是什么意思？

The ring undulating surface error function description, then selection of the far-field divergence angle and the Strehl ratio as the beam quality evaluation factor, numerical simulation analysis of ring undulating surface error on the beam quality.

This article is first in the ring of ups and downs, and error in the function descriptions, and then use far-field divergence angle than the column, beam quality evaluation as a factor, the value of simulation and ups and downs of the ring-shaped beam quality of the error.

This article first has carried on the function description to the ring-like fluctuation face shape error, then selected the distant field divergence angle and Si Telie you compares with for the light beam quality appraisal factor, the value simulation has analyzed the ring-like fluctuation face shap

This article on the face of cyclic fluctuation function the error description, and far-field divergence angle selection and evaluation of sitelieerbi as an beam quality factor, numerical simulation analysis of the surface error of cyclic fluctuation influence of beam quality.

正在翻译，请等待...