引用集 meaning in English

the reference set

Class manages a collection of references
类管理一个引用集。
Second , when you save a database project , the set of database references is saved with the project
第二，当您保存某个数据库项目时，数据库引用集与该项目一起保存。
In any case , the runtime must maintain an explicit set of references from old objects to young ones and add these references to the root set when collecting the young generation
不管是什么情况，运行库都必须维护一个老对象到年轻对象的引用集并在收集年轻代时将这些引用添加到根集中。
Main research work and achievements are as follows : based on assembly modeling of simple products in unigraphics , the method of large assembly modeling of complex products is put forward . main idea of the method is that a large assembly is divided into many small subassemblies , at the same time , simplifying geometry of subassemblies . by reference sets , simplification model of complex products is created which is especially useful for browsing its whole shape
论文的主要工作如下：在ug装配建模的基础上，基于组件的思想对复杂产品进行大装配建模，将大装配分割成计算机能处理的子装配，简化子装配的几何，利用引用集调用子装配的简化几何建立复杂产品的简化大装配模型。