impactor
impactor — 名詞
1. a tool or machine that delivers a forceful blow to shape, break, or move an obje
衝擊器；撞錘
靠敲擊運作的機械裝置
a tool or machine that delivers a forceful blow to shape, break, or move an object — for example, a pile driver driving steel beams into the ground, or a forging hammer shaping hot metal.
The construction crew used a steam-powered impactor to drive steel piles into the riverbed.
建築團隊使用蒸汽驅動的撞擊器將鋼樁打入河床。
collocation: steam-powered / hydraulic / pneumatic impactor
Ilan checked the impactor's piston assembly before every shift to prevent costly breakdowns.
Ilan 每次輪班前都會檢查撞擊器的活塞組件，以避免代價高昂的故障。
Unlike a manual sledgehammer, a pneumatic impactor delivers fast, powerful strikes without human effort.
有別於手動大錘，氣動撞擊器能快速有力地敲擊，無需人力施力。
Stephanie wore ear protection because the impactor's repeated blows were extremely loud inside the workshop.
Stephanie 戴上耳罩，因為撞擊器在車間裡反覆敲擊的聲音極大。
The factory replaced its old press with a hydraulic impactor for shaping car panels.
那間工廠用液壓撞擊器取代了舊壓床，用來沖壓車身鈑件。
- hammer
general term for any striking tool; impactor usually implies a powered, industrial machine
- pile driver
specific type of impactor used in construction to drive piles
- ram
a moving part that delivers the blow inside an impactor mechanism
- forging press
a machine that shapes metal by applying pressure, related but not always impact-based
用法筆記
Often modified by pneumatic, hydraulic, steam-powered, or mechanical to indicate the power source. The term is most common in construction, metalworking, and mining contexts.
常見錯誤
2. a piece of rock or metal from outer space that strikes the surface of a planet,
撞擊體；隕石
撞擊星球表面的太空岩石
a piece of rock or metal from outer space that strikes the surface of a planet, moon, or other celestial body.
The vast crater in Namibia was formed by a massive iron impactor long ago.
納米比亞的巨大隕石坑是遠古時期一顆大型鐵質撞擊體造成的。
collocation: iron impactor / massive impactor
Geologists determined the rock was an impactor from the main asteroid belt.
地質學家判定那塊岩石是來自主小行星帶的撞擊體。
Scientists study the minerals inside each new impactor to learn about the early solar system.
科學家研究每個新發現的撞擊天體中的礦物成分，以了解太陽系早期的歷史。
Dewi's team traced the impactor's origin to a collision between two asteroids.
Dewi 的團隊將該撞擊體的起源追溯至兩顆小行星的碰撞。
- meteorite
the most common synonym; impactor is more technical and emphasizes the collision event
- projectile
broader term for any object thrown or fired; does not specifically imply a space origin
用法筆記
Distinguish from meteor (the visible streak of light in the sky) and meteoroid (a small rock in space before it enters an atmosphere). An impactor is the object that actually collides with a surface.