求翻译：远场发散角随环形起伏偏差P-V值的增加而增大，斯特列尔比随环形起伏偏差PV值增大而减小，可见光束质量随环形起伏偏差P-V值的增大而降低；是什么意思？

Far-field divergence angle with the ring and downs deviation increase of pv value increases, the Strehl ratio decreases with the ring and downs deviation pv value, visible beam quality is reduced with the increase of the ring downs deviation pv value;

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The distant field divergence angle increases along with the ring-like fluctuation deviation P-V value increase, Si Telie you compared to increase along with the ring-like fluctuation deviation PV value reduce, the obvious light beam quality increases along with the ring-like fluctuation deviation P-

Far-field divergence angle increases as the deviation of ring rolling P-V increase in value, PV sitelieerbi with ring rolling deviation value increases and decreases, visible light beam quality with reduced P-V ring rolling deviation values increase;

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