significant figure
短语[计] 有效位, 有效数位, 有数字 [化] 有效数字
词形变化
significant figures
复数
significant figures
别名
sig. fig.
释义与例句
n.
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1.
Used other than figuratively or idiomatically: see significant, figure.
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2.
A digit that is meaningful with respect to the precision of a measurement; that is, excluding any leading zeroes, trailing rounding or placeholder zeroes, and non-zero digits not warranted by the accuracy of a derivation or measurement.
有效数字
数学The speed was calculated by dividing 2314 metres by 71 seconds and reported as 32.5915 m/s, but since both the distance and time were measured only to the nearest whole number, there were actually only two significant figures in this result, i.e. 32.