phonautograph
/fәu'nɔ:tә^rɑ:f/
📖 中文释义
- [物]声波记振仪, 声波振动记录[图表]
📘 English Definition（英文释义）
- n. An instrument by means of which a sound can be made
- to produce a visible trace or record of itself. It consists essentially
- of a resonant vessel, usually of paraboloidal form, closed at one end
- by a flexible membrane. A stylus attached to some point of the membrane
- records the movements of the latter, as it vibrates, upon a moving
- cylinder or plate.