push-in system

• 推进系统

push-in system的用法和样例：

例句

1. Propulsion system selection criteria and mission analysis are introduced.
   推进系统的选择标准以及任务分析也将一一介绍。
2. The essential quality that dictates the choice of this propulsion system is readiness.
   决定选用这种推进系统的主要因素就是其简便性。