We use the concept of billboards, to ensure the continuity of raw material supply, and provide excellent product availability and response.
我们使用看板的概念，以确保原料供应的连续性，并提供优良的产品的可用性和响应。
2
There is an important concept in mathematical analysis, nomely uniform continuity and nonuniform continuity.
一致连续与非一致连续是数学分析中的一个重要的概念。
3
In this paper the concept of complex generalized weights is introduced. And we discuss the properties for the complex weights with the right continuity or countable subadditivity.