particle encounter meaning in English
粒子碰撞
Examples
- The cometary and interstellar dust particles encountered by stardust were traveling ten times at speeds of around 20 kilometers ( 12 miles ) per second relative to the spacecraft
彗星和星际尘埃颗粒会以10倍于“星尘”的飞行速度，也就是大约20千米/秒的相对速度撞上“星尘” 。