radioactive snow gage

[¦rād·ē·ō′ak·tiv ′snō ‚gāj] (engineering) A device which automatically and continuously records the water equivalent of snow on a given surface as a function of time; a small sample of a radioactive salt is placed in the ground in a lead-shielded collimator which directs a beam of radioactive particles vertically upward; a Geiger-Müller counting system (located above the snow level) measures the amount of depletion of radiation caused by the presence of the snow.

单词	radioactive snow gage
释义	radioactive snow gage radioactive snow gage [¦rād·ē·ō′ak·tiv ′snō ‚gāj] (engineering) A device which automatically and continuously records the water equivalent of snow on a given surface as a function of time; a small sample of a radioactive salt is placed in the ground in a lead-shielded collimator which directs a beam of radioactive particles vertically upward; a Geiger-Müller counting system (located above the snow level) measures the amount of depletion of radiation caused by the presence of the snow.
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