“测回中数”在测绘领域常用的英文表达是 "mean value of a set (or observation group)" ,不过在更专业细致的测绘英语语境里,也可表述为 "mean of the observation set in a round of measurement" ,“a round of measurement”对应“测回”这一概念,强调是在一次完整的测量循环(测回)中观测数据集的平均值。
示例句子:
We calculate the mean of the observation set in a round of measurement to reduce random errors.
(我们通过计算测回中观测数据集的平均值来减小随机误差。)