bell jar
基本解释
[机] 钟罩
英文释义
A glass vessel, varying in size, open at the bottom and
closed at the top like a bell, and having a knob or handle at the top
for lifting it. It is used for a great variety of purposes; as, with
the air pump, and for holding gases, also for keeping the dust from
articles exposed to view.
上一个单词：Bell interpretive system
下一个单词：bell jar cell