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词汇 piston whistle
释义

Definition of piston whistle in English:

piston whistle

noun
  • A whistle in which the pitch of the sound is varied by means of a piston sliding in the tube, shortening or lengthening the vibrating column of air.

Origin

Late 19th century; earliest use found in The Century Dictionary.

Definition of piston whistle in US English:

piston whistle

noun
  • A whistle in which the pitch of the sound is varied by means of a piston sliding in the tube, shortening or lengthening the vibrating column of air.

Origin

Late 19th century; earliest use found in The Century Dictionary.

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