Beginning programmers quickly discover that the textual representation of a number differs distinctly from a numeric variable on which programs can perform mathematical operations.
早期的程序员们很快发现了数字的文本表示与程序能在上面执行数学运算的数字变量显著不同。
This section of the course develops the mathematical concepts used in statistics. Three ideas are essential: Random Variable, Density Functions, and Expectations.
此部分课程扩展了统计学中的基本数学概念。三个基本想法如下：随机变数，密度函数与期望。
Tube mill pulverizer system is a multi variable and strong coupling process, which is difficult for mathematical model establishing.
中储式球磨机制粉系统是一个多变量、强耦合的对象，数学模型难以建立。
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