we have to distinguish between the propagating modes with real valued β, and the evanescent modes with imaginary β. 我们必须分别考虑具有实数的导模和具有虚数的消失模。
Completeness of real numbers 实数的完备性
The character representation of the real number is dictated by the specified format 实数的字符表表形式由指定的格式决定。
Integer can assign to integer and real variable , but real number can only assign to real variable 整数可以配给整数及实数的变数,但实数只可以配给实数变数
Unfortunately , because of the actual numbers used , spirit now has very little in - game effect 不幸的是因为程序中实数的运用,精神力目前所提供的影响非常小。
< uk > we have to distinguish between the propagating modes with real valued , and the evanescent modes with imaginary . < / uk > < uk >我们必须分别考虑具有实数的导模和具有虚数的消失模。 < / uk >
In this thesis , we study and discuss deeply data preprocessing based on rough set . first , the characteristic and shortcoming of primary algorithms about the computation of null values is analysised , and principle and target of the completation is indicated 而经典的粗集理论不能处理原始数据资料中的遗漏信息以及值域为实数的数据,需要经过数据预处理,包括数据补齐和离散化处理后才能进行知识获取,因此如何有效地进行数据预处理具有非常重要的现实意义。