Learning object : any reproducible and addressable digital or non - digital resource used to perform learning activities or support activities 学习对象：用来完成学习活动或者支持活动的，任何可再生的，和可设定地址的数字或者非数字资源。
Dividing a floating - point value by zero will result in either positive infinity , negative infinity , or not - a - number according to the rules of ieee 754 arithmetic 根据ieee 754算法规则，用零除浮点值将产生正无穷大、负无穷大或非数字( nan ) 。
Of course , a dictionary can have non - numeric key values , which may take some getting used to if you ve never used this sort of data type before 当然， dictionary可以具有非数字的键值，如果您以前没有使用过这种数据类型，那么适应这一点需要些时间。
Combine custom numeric format specifiers to define an application - specific pattern that determines how numeric data is formatted . numeric format strings are supported by the ）是正无限或负无限，或者是nan （非数字） ，则格式化字符串分别是由当前的可用
Write a regular expression that will return the decimal part of a numeric string . for extra credit , your expression should fail if the string contains anything other than a number 写一个可返回数字串的小数部分的正规表达式.特别指出,假如串中包含了非数字内容，则该表达式将会出错
You can use this software to facilitate the importation of non - digital , in alphabetical symbols , the program produced its own keyboard , without the need for frequent in a variety of soft switching between keyboard 您可以用本软件方便的输入非数字、英文字母符号，制作自己的键盘方案，而不需要频繁在各种软键盘之间进行切换。
The last two lines show that , while rexx performs conversions automatically whenever possible , it will not let you add a non - numeric character string to a number ; only variables that contain numeric values can be treated as numbers in calculations 最后两行表明，虽然rexx可以随时自动执行转换，但它不允许将非数字字符串与一个数相加。在计算中，只有包含数值的变量才可以看作数。
One of his significant contributions is the development of the z - transformation approach to the analysis of sample - data systems . in 1965 , professor zadeh s research interest shifted to the theory of fuzzy sets and its applications , which provided a basis for a qualitative approach to the analysis of complex systems 一九六五年，泽德教授将研究焦点放于快思集理论及其在人工智能、逻辑学、控制理论及神经网络等范畴的应用方面，透过快思集的概念，对涉及语言变数而非数字的复杂系统作质量的分析提供基础。
And reliability and accuracy of inversion results would be enhanced obviously . on the other hand , wavelet threshold optimization method for digital data processing and quantized monotonic denoising method for non - digital data processing are established . and multiscale denoising function and computation stability of these two methods are compared with each other 反演数据多尺度处理的数值试验说明，量化单调消噪方法不仅适合于非数字式数据的处理，也适合于数字式数据的处理，而且能大幅度降低数据的噪声，提高反演结果的可靠性与准确度，且具有较强的适应性和计算稳定性。
