dry obiective

英 美
  • 干物镜
  • dry adj.干的;干燥的;干旱的;口渴的;枯燥的v.(使)变干
    1. The oil-immersion objectives just described admit a wider cone of rays than a dry objective of the same diameter would.
      刚才描述的油浸物镜与直径相同的干物镜相比,可容纳更宽的光线锥。