出典:Wiktionary
出典:『Wiktionary』 (2026/02/01 22:56 UTC 版)
speedometer (plural speedometers)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/05 16:05 UTC 版)
A speedometer is a gauge that measures and displays the instantaneous speed of a land vehicle. Now universally fitted to motor vehicles, they started to be available as options in the 1900s, and as standard equipment from about 1910 onwards. Speedometers for other vehicles have specific names and use other means of sensing speed. For a boat, this is a pit log. For an aircraft, this is an airspeed indicator.
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an instrument used to measure the rate of flow, called a current meter
a gauge
an apparatus used to measure speed, called speedometer
an instrument used to measure velocities
超音速.
the speed limit
前進速度.
an instrument used to measure force or power