propulsion
propulsion — 名詞
1. a physical force that moves an object, such as a vehicle or spacecraft, in a par
推力
推動物體前進的力量
a physical force that moves an object, such as a vehicle or spacecraft, in a particular direction
Sana studied how the propulsion of a space shuttle is generated during lift-off.
Sana 研究了太空梭的推力如何在升空時產生。
collocation: propulsion of [vehicle]
Without enough propulsion, the fishing boat could not move against the strong current.
沒有足夠的推力，那艘漁船無法抵抗強勁的水流前進。
uncountable; modified by 'enough'
The new electric motor provides clean propulsion for small passenger ferries.
新的電動馬達為小型載客渡輪提供清淨的推力。
adjective + propulsion: clean propulsion
Kenji explained that jet propulsion pushes a plane forward by creating a stream of hot gas.
Kenji 解釋說，噴射推力是靠產生一股高溫氣流來推動飛機前進。
compound noun: jet propulsion
- jet propulsion
- rocket propulsion
- electric propulsion
- provide propulsion
- generate propulsion
- source of propulsion
- thrust
more specific; refers to the measurable reaction force from expelling mass, commonly used for rockets and engines
- drive
broader; can refer to mechanical power transfer, not necessarily forward motion
- motive power
formal/technical; refers to the energy source that produces motion
- resistance
the opposing force that works against forward movement, such as drag or friction
文法句型
propulsion + of [something]
adjective + propulsion
用法筆記
Propulsion in this sense is uncountable and typically modified by an energy source or method (jet, rocket, electric). Unlike 'thrust', which refers to a specific reaction force measured in newtons, propulsion is a broader term for any forward-driving force.
常見錯誤
2. the system or method by which an object is driven forward through a medium such
推進
驅動物體前進的系統或方法
the system or method by which an object is driven forward through a medium such as air or water
The engineers developed a new propulsion system that uses solar power for deep-space missions.
工程師開發出一套新的推進系統，使用太陽能進行深空任務。
collocation: propulsion system
Iker asked whether magnetic propulsion could replace traditional engines on high-speed trains.
Iker 想知道磁力推進能否取代高速列車上的傳統引擎。
compound noun: magnetic propulsion
Rocket propulsion works by burning fuel and forcing the hot gas out of the back at high speed.
火箭推進的原理是燃燒燃料，然後將高溫氣體以高速向後噴出。
compound noun: rocket propulsion
Camila's research focuses on improving the efficiency of electric propulsion for small satellites.
Camila 的研究重點在於提升小型衛星電動推進系統的效率。
- propulsion system
- propulsion technology
- propulsion method
- electric propulsion
- nuclear propulsion
- magnetic propulsion
- propulsion system
more explicit; refers to the complete assembly of components that produce motion
- propulsion method
highlights the approach or technique rather than the hardware
- motive system
formal; often used in engineering documents for the power-and-drive arrangement
文法句型
propulsion + system / technology / method
adjective + propulsion
用法筆記
This sense commonly appears in compound nouns describing a technology category — 'propulsion system', 'propulsion method', 'propulsion technology'. In everyday conversation, the simpler word 'engine' is more common than 'propulsion system'.