QinetiQ North America will provide the electric drive propulsion or E-X Drive system for the GCV. This is a key component of the hybrid-electric drive system, according to a BAE press release.
北美QinetiQ将为GCV提供电力驱动推进或前驱动系统，这是混合动力驱动系统的关键组成部分。
A persistent closure of a managed root entity x is defined as the set of managed entities C(x) ={e}, where e is reachable from x directly or indirectly via a persistent relationship.
管理根实体 x 的一个持久化闭包被定义为一个管理实体集 C(x) ={e}，其中 e 可以直接或间接通过一个持久化关系从 x 访问。
应用推荐