watch glass

名词 n.
中文释义

英文释义

名词 n.
  1. An item of glass laboratory equipment consisting of a simple, slightly concave circle of glass. It is a general utility item, used to hold small samples, to evaporate liquids, to cover a beaker, and so on.
  2. The glass covering of the face of a watch.
  3. A sandglass, hourglass.

词形变化

watch glasses plural
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