propulsion

名词 propulsion:

1. a propelling force
2. the act of propelling
   同义词：actuation

1. And the propulsion method whether steam or diesel, you'll leave to us, I suppose?
   至于动力方式是采用“蒸气式”抑或“柴油式”, 我想贵公司将交由我方全权处理吧？
2. A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion.
   翼剖面; 机翼; 翼面一个部件或平面，如机翼、螺旋桨叶、方向舵等，其形状或方位控制稳定性、方向、抬升、冲击或驱动
3. This aircraft works by jet propulsion.
   这架飞机是喷气推进的。

pro.pul.sion

n.（名词）
The process of driving or propelling.
推进：驱使或推进的过程
A driving or propelling force.
推进力：一种驱动或推进的力量

来源：
Medieval Latin prôpulsiô prôpulsiôn- [onslaught, urging on]
中世纪拉丁语 prôpulsiô prôpulsiôn- [攻击，催促]
from Latin prôpulsus [past participle of] prôpellere [to drive forward] * see propel
源自 拉丁语 prôpulsus [] prôpellere的过去分词 [向前驱动] *参见 propel

【引伸】
propul.sive 或
propul.sory