| 释义 |
velometer|vɛˈlɒmɪtə(r)|
[Irreg. f. velocity + -meter or by contraction of velocimeter.]
†1. A kind of governor for a marine steam engine. Obs.
1878Engineer 13 Sept. 190/1 A marine governor or antiracer... The..‘Velometer’..has got into use entirely by force of its own merits.
2. An instrument for measuring the speed of air, or of an aircraft through the air.
1914Flight 24 Jan. 82/2 The velometer..balances a pressure due to the speed through the air against the apparent weight of a column of liquid. 1939Jrnl. R. Aeronaut. Soc. XLIII. 931 The design and application in mines of a spring-controlled vane-type air flow meter known as the Velometer. 1974IEEE Trans. Instrumentation & Measurement XXIII. 203/1 A sonic velometer uses the passage of sound waves through air to determine the air velocity. |