bell jar
📖 中文释义
- [机] 钟罩
📘 English Definition（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.