conventional propellant loading system

例句：

1. 1. The conventional propellant loading systemis designed to be easy to use andmaintain.
   传统的推进剂装载系统设计为易于使用和维护。
2. 2. The new design of the conventionalpropellant loading system has improved efficiencysignificantly.
   新型的常规推进剂装载系统设计提高了效率。
3. 3. The conventional propellant loadingsystem is widely used in space exploration vehicles.
   常规推进剂装载系统在太空探索车辆中广泛使用。