If the precision specifier is present and the number of significant digits in the result exceeds the specified precision, then the excess trailing digits are removed by rounding.是什么意思_If the precision specifier is present and the number of significant digits in the result exceeds the specified precision, then the excess trailing digits are removed by rounding.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句