数量

Put the social class as the argument, the number of all kinds of words as the dependent variable. Through the statistics, we can reveal the relationship between social class and word usage.

因此我们把社会阶层设为自变量，把各类词语出现的数量设为因变量，通过数量统计，观察阶层与词语数量的关系，来揭示社会阶层与词语使用情况的关系。

The maths contains three relationships: the relationship of number and amount, time relationship and spatial relationship. Thereinto, the relationship of number and amount is the important factor in promoting the development of thinking.

数学蕴含着三种关系：数量关系、时间关系和空间关系。其中，数量关系是促进思维发展的重要因素。在幼儿阶段，幼儿主要理解十二种数量关系。

This model describes the function relation between product quantity or fluorescence intensity and initial template number and other reaction conditions, and can reflect the accumulating rule of PCR product molecule accurately.

PCR动力学数学模型是根据PCR技术的原理提出的，能够准确描述PCR反应产物分子数量积累规律的动力学方程，给出了PCR产物数量或者荧光强度与初始模板数量及其他反应条件间的函数关系。