significant figures

• 有效数字

significant figures的英文翻译是什么意思，词典释义与在线翻译：

英英释义

名词 significant figure:

1. any digit of a number that is known with certainty; any digit of a number beginning with the leftmost non-zero digit and ending with the rightmost non-zero digit (or a zero considered to be the exact value)

significant figures的用法和样例：

例句

1. Rules for determining significant figures in reading are given below.
   有效数字的读取规则。
2. The number of significant digits displayed in floating point numbers.
   浮点数中显示有效数字的位数。