Doubts were expressed concerning the validity and reliability of the primary measuring instrument.
人们对最初的测量工具的效度和信度产生了一些怀疑。
The problem of error estimate in the primary measurement, the selection of measuring instrument accuracy and the calculation of the effective data are discussed and explained with examples.
讨论了物理实验基础知识中一次测量的误差估计、测量仪器精度的选择和有效数字运算等问题，并以实例予以说明。
The problem of error estimate in the primary measurement, the selection of measuring instrument accuracy and the calculation of the effective data are discussed and explained with examples.
讨论了物理实验基础知识中一次测量的误差估计、测量仪器精度的选择和有效数字运算等问题，并以实例予以说明。
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