音标:英 [,maikrәj'mi:tiәrait]
微小陨石
a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere
1. It's got this outer layer right here, which can absorb the impacts of little micrometeorite particles at very high speeds and break them up and not allow it to penetrate the surface.
这里还有一个防护层 能够吸收微小陨石颗粒高速冲撞时 产生的冲击力 并将它们击碎防止它们穿透表面