In meteorology, mixing ratio usually refers to the mass ratio, which is defined as the mass of a constituent divided by the total mass of all other constituents in a mixture:
The mass ratio of water vapor in air can be used to describe humidity.
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Famous quotes containing the words mass and/or ratio:
“I am not a very sentimental man; and the best sentiment I can think of is, that if you collect the signatures of all persons who are no less distinguished than I, you will have a very undistinguishing mass of names.”
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