Unicom International business subsystem is typical J2EE system, so studying the development of this system is helpful for developing and reconstructing similar systems.

联通国际营业子系统是典型的J2EE系统，对这一系统开发所进行的研究对类似系统的研发与改进具有一定的指导意义。

youdao

You try to dig out any documentation that exists for these systems and then build your functional areas, subsystem maps, and higher-level business use cases from there.

将尝试发掘存在的任何有关这些系统的文档，并随后以此为依据构建功能区域、子系统映射和高级业务用例。

youdao

A service provider node can represent the services of a business entity or it can simply represent the service interface for a reusable subsystem.

服务提供者节点能代表商业实体的服务，或者它甚至能代表可重用的子系统的服务接口。

youdao

This subsystem works fine for business graphics, though you can't upgrade it later.

CNN: Fast and pricey PIII 550 reconsidered