phonautograph
fәu'nɔ:tә^rɑ:f
基本解释
[物]声波记振仪, 声波振动记录[图表]
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.
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