impactor
n. 撞击器;悬浮微粒的取样器
例句
Such a titanic collision between Earth and a Mars-size impactor may have given rise to Earth's Moon.
地球和火星大小的撞击物发生如此巨大的碰撞,可能导致了月球的形成。
In such collisions, the impactor is completely destroyed and its material is incorporated into the larger body.
在这种碰撞中,撞击者被完全摧毁,其物质被并入较大的天体中。
In a titanic collision model, the bulk of the Moon would have formed from a combination of material from the impactor and Earth's mantle.
在泰坦尼克碰撞模型中,月球的大部分是由来自撞击者和地幔的物质结合形成的。