Precision measurements of this sort are fraught with difficulty and other sources of error may have crept in.
这一类精密测量总是有许多困难,一些人们未曾预料到的其他误差源可能影响结果。
Normally when or 10 years ago, if an astronomer told you that he was making measurements to a precision of five parts in a million, you would just laugh.
通常在10年前,如果一个天文学家告诉你,他的测量精度是百万分之五,你只会哈哈大笑。
Objective. To measure the accuracy and precision of such measurements in comparison with a standard method.
目的:通过与一种标准方法对比以评估这种测量方法的准确性和精确度。
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