The system includes two modules which are the foreground system and the background system.

本次设计主要把系统分为前台系统和后台系统两个模块。

youdao

Method: the physicochemical properties of soil were analyzed, the geologic background system between producing areas of Yunnan and Guanxi of P. notoginseng was compared.

方法比较云南、广西三七产区的不同地质背景系统，分析土壤理化状况。

youdao

In the background system, there are six modules too, which are orders management, transport management, merchandise management, administrator management, news management.

后台系统中有订单管理、运输管理、商品管理、管理员管理、新闻管理、用户留言管理六个子模块。

youdao

So if you're coming from prior background, your code might work a little differently on a different system if you don't use those flags.

如果你来自一个先前的背景，如果你们没有使用这个版本标志的话，在一个不同的系统中,你的代码可能运行地不太一样。

哈佛公开课 - 计算机科学课程节选

Federally licensed gun shops must use the National Instant Criminal Background Check System, or NICS. Private sellers and gun shows have no background check requirement.

CNN: STORY HIGHLIGHTS

Statistics from the FBI's National Instant Criminal Background Check System (NICS) show about 1 percent of applicants who failed a background check over the past 14 years, or 10, 180 people, were turned down for reasons related to mental health.

CNN: STORY HIGHLIGHTS

Gun-control advocates have helped highlight these flaws, but some also worry that focus on the system's holes will be used as an excuse to block legislation requiring universal use of the background check system.

WSJ: Systemic Gaps Hinder Background Checks for Gun Purchases