有效数字

In the process of processing the digital images, a modified, easy and valid algorithm between global binarization and local binarization are researched in case that the processing objects are specific in this paper. Digital images algebraic operation and guide line for wiping the discrete offending points are confirmed. Not only the program that can realize the algorithm but also handling system is built. The applicability that the relative processing method is used to solve the practical application problems is discussed.

本文在对采集到的数字图像进行计算机处理的过程中，针对所处理对象的特殊性，研究了便于处理且有效的融合全局二值化和局部二值化思想的改进的图像二值化处理方法和算法；确定了在比较复杂的背景下提取有用的前景信息的数字图像代数运算方法和离散干扰点的去除判别准则，并编写程序实现了这一算法，建立了比较有效快速的处理系统；探讨了相关处理方法在解决实际应用问题时的适用性。

If the IEEE double-precision significand has more precision than the internal representation it will be rounded to the internal representation using the round to nearest rule.

如果 IEEE 的双精确有效数字比内部表示法有更多的精确度，它将会被用四舍五入到最接近的规则来四舍五入成内部表示法。

In a typical implementation, the range is determined by the number of bits used in the exponent, and the precision by the number of bits used in the mantissa (giving the maximum number of significant digits that can be exactly represented).

在一个典型的实现中，范围是由用于表示指数的二进制位数量所决定，而精度是由用于表示尾数(给出了可以精确表示的有效数字的最大位数)的二进制位数量所决定。

If we multiply that fraction by 10\*\*30, we can see the value of

如果我们将这个分数乘 10**30，我们可以看到的30位十进制有效数字

In computing , most significant bit is the bit position in a binary number having the greatest value. The msb is sometimes referred to as the left-most bit , due to the convention in positional notation of writing more significant digits further to the left.

在计算机运算中，最高有效位，是指在一个二进制数中具有最大值的那一个二进制位。msb有时也被称为"最左边的位"，这是因为在权位记数法中习惯上将较大的有效数字顺序的写在左边。

If the IEEE single-precision significand has more precision than the internal representation, it will be rounded to the internal representation using the round to nearest rule.

如果 IEEE 的单精确有效数字比内部表示法有更多的精确度，它将会被用四舍五入到最接近的规则来四舍五入成内部表示法。

First two digits are significant, and the third digit is number of zero.

前两位为有效数字，后一位表示零的个数。

Another advantage is that you can use format specifiers other than %s, so that, for example, you can control how many significant digits the string form of a floating-point number should display.

另一个好处是可以使用'%s'外的其它格式符，例如，你可以控制用多少位有效数字来显示浮点数。

Table 3 has too many significant figures presented. Values should be rounded to the nearest whole number.

表3中已呈现了太多有效数字，数值应四舍五入为最接近的整数。

Python's builtin str function produces only 12 significant digits, and you may wish to use that instead.

Python的内置函数 str 只生成保留12位有效数字的浮点数，有时候你可以用它。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。