ta·chom·e·ter /tæˈkɑmətɚ/
轉速計,流速計
tachometer
轉速計
tachometer
*轉速計
Ta·chom·e·ter n. An instrument for measuring the velocity, or indicating changes in the velocity, of a moving body or substance. Specifically: --
(a) An instrument for measuring the velocity of running water in a river or canal, consisting of a wheel with inclined vanes, which is turned by the current. The rotations of the wheel are recorded by clockwork.
(b) An instrument for showing at any moment the speed of a revolving shaft, consisting of a delicate revolving conical pendulum which is driven by the shaft, and the action of which by change of speed moves a pointer which indicates the speed on a graduated dial.
(c) Physiol. An instrument for measuring the velocity of the blood; a haematachometer.
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tachometer
n : measuring instrument for indicating speed of rotation [syn:
tach]