second axiom of countability 第二可数性公理
second countability axiom [数] 第二可数公理
first axiom of countability 第一可数性公理
countability axioms 可数性公理
first countability axiom 第一可数性公理 ; 第一可数公理
first countability [数] 第一可数性
axiom of first countability 第一可数公理
Apart from the possibility of being counted, countability also refers to countable meanings or usages as well as count nouns.
可数性除了指被计数的可能性外，还可以指可数语义或用法，以及可数名词。
For the Number of nouns, countability is the essential property of count nouns, but the singular, dual and plural are the realization of this property.
就名词的数范畴而言，可数性是可数名词的本质属性，单、双、复数形态是可数性的一种外在实现。
The permutation of the finite set is introduced into the denumerable set as well as the definition of the basic rotation, the rotation and the composition of the countability.
把有限集中的置换推广到可数集上，引入基轮换、轮换及变换的可数次合成等概念的定义。
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