由于计数和测量的需要，人类首先有了正整数的概念。随着人类社会的不断发展，在生产和生活实践中逐渐感到正整数的不够用而产生了正分数和零。为了表示相反意义的量又引入了负有理数，于是数的系统扩充为全体有理数。
数概念 [shù gài niàn]
网络释义专业释义
... nucleus dorsalis nervi vestibuli 前庭神经上核 number concept 数概念 numerical range 数值范围 ...
基于60个网页-相关网页
短语
导数概念 The Concept of Derivative
数学概念 mathematical concept ; Math concepts ; concepts of mathematics
程能力指数概念 cpk
概念数据模型 Conceptual Data Model ; CDM ; cdm power designer ; Conceptual Data Model-CDM
函数概念 the Function conception ; The Concept of Function
复数概念 Chinesenesses
基本函数概念 Elementary Function
数据库系统概念 Database System Concepts ; Database System Concepts Sixth Edition
关系数据库的概念 RDBMS
双语例句原声例句
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幼儿数概念的形成是一个复杂的过程。
It is a complex procedure for the formation of the children's numeral concept.
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对于多属性决策问题，引进属性偏爱数概念。
The attribute preference number for multiple attribute decision making problems is introduced.
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本文从灰色信息的内涵出发，给出了泛灰集与泛灰数概念。
The concepts of the hyper real set, universal grey set and universal grey number as derived from the connotation of grey information are proposed.
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So, there's two kind of cartoons shown here that give you a little bit of an idea of what this quantum number tells us.
这里展示的两个图片,可以让你们对,这个量子数有些概念。
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We'll get to oxidation number in the second half of this course, but it's not in any way the same idea as formal charge.
我们会在课程的后半部分讲到氧化数，但它和形式电荷完全不是同一个概念。
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But now, it has come to light that they are the ones that do get credit for first really coming up with this idea of a spin quantum number, and it's interesting to think about how the politics work in different discoveries, as well as the discoveries themselves.
但现在我们,知道他们是,最先想出自旋量子数,这个概念的人，看各种发现中的,政治学是十分有趣的，和发现本身一样有趣。
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$firstVoiceSent
- 来自原声例句