seven system meaning in Chinese

七人密集队形

They outlined seven systems .
他们曾拟定了7种系统。
Db2 udb stores information about privileges in seven system catalog views
Db2 udb将关于特权的信息存储在七个系统编目视图中：
There have been many questions about the petroleum pool formation conditions and models for this area since the first well was drilled in 1988 , which has had an great influence on the further petroleum exploration and development . in this study , a method with the combination of petroleum geology , sequence stratigrapy , organic geochemistry and geophysics , based on drilled core analysis data , well data and seismic sections , has been applied to investigate the petroleum pool formation conditions and models in this area , and the following results and recognition have been obtained : ( 1 ) . the lower tertiary strata are subdivided into two sequences and seven systems
本研究以钻井取心分析资料、测井数据、地震资料为基础，综合利用沉积学、层序地层学、石油地质学、地球物理学、有机地球化学等多门学科的有关理论和研究方法，通过对埕岛东斜坡区油气藏形成条件和模式研究，主要取得了以下几个方面成果和认识： ( 1 )埕岛东斜坡地区下第三系共划分两个层序、七个体系域，其中沙一段至东三段中下部沉积为层序，东三段上部至东一段为层序。