metrograph

名词 n.
中文释义

英文释义

名词 n.
  1. An instrument attached to a locomotive for recording its speed and the number and duration of its stops.
    — Metrographs have been devised for counting the revolutions and speed of locomotive wheels.
  2. A device used to measure the flow and velocity of liquids.
    — Represented by R.W. Sparling, and C. F. Sherwood, exhibited the Sparling line of main line meters and metrograph recording instruments.
  3. Any of various devices that continuously record several meteorological phenomena; a radiosonde or one of its precursors.
    — The automatic records of the sunshine recorder, the anemometer and the wind vane, are registered on one instrument, which is called a metrograph or improved triple register.
  4. A device that uses reflection holograms to accurately measure three-dimensional objects, used primarily in orthodontics.
    — With the metrograph, the hologram is fixed and the point of light can be moved in the three orthogonal directions.

词形变化

metrographs plural

词源

From metro- + -graph.
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