Online Google Dictionary

maser 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈmāzər/,
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masers, plural;
  1. A device using the stimulated emission of radiation by excited atoms to amplify or generate coherent monochromatic electromagnetic radiation in the microwave range

  1. an acronym for microwave amplification by stimulated emission of radiation; an amplifier that works on the same principle as a laser and emits coherent microwave radiation
  2. Maser is a sounding rocket that is used in the MASER microgravity research rocket programme, which is operated by the Swedish Space Corporation (SSC). The main customer is the European Space Agency (ESA), and in particular its EMIR and ELIPS programmes.
  3. Maser is a comune (municipality) in the Province of Treviso in the Italian region Veneto, located about 50 km northwest of Venice and about 25 km northwest of Treviso. As of 31 December 2004, it had a population of 4,854 and an area of 26.0 km². ...
  4. a device for the coherent amplification or generation of electromagnetic radiation (especially of microwave frequency) by the use of excitation energy in resonant atomic or molecular systems; Any celestial object that generates microwaves using the same method
  5. (masers) (in  maser (physics): Gas masers)
  6. A source of radiation that produces intense radio beams; hudroxyl molecules and water molecules have been found to act as masers.