Variation of length of day

• 日长变化

Variation of length of day的用法和样例：

例句

1. The analysis shows that the measurement precision drops rapidly with length misadjustment and spot offset brought by cavity mirrors' tilt.
   分析表明，腔镜微小倾斜产生的衍射损耗的变化可以忽略，但导致的腔长变化和衰荡光斑漂移，会限制测量的精度。