| background radiation |
radiation coming from sources other than those being observed
출처: wordnet.princeton.edu/perl/webwn
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| background retinopathy |
background diabetic retinopathy, diabetic retinopathy characterized by progression of microaneurysms, intraretinal punctate hemorrhages, yellow exudates, cotton-wool spots, and sometimes macular edema that can compromise vision.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| background radiation |
Background radiation is the ionizing radiation from several natural radiation sources: sources in the Earth and from those sources that are incorporated in our food and water, which are incorporated in our body, and in building materials and other products that incorporate those radioactive sources; radiation sources from space (in the form of cosmic rays); and sources in the atmosphere which primarily come from both the radon gas that is exhaled from the earth's surface and subsequently ...
출처: en.wikipedia.org/wiki/Background_radiation
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| background activity |
in measurements of physical or physiological processes, the ongoing generalized, sometimes artifactual, activity from which the more specific activity in question must be distinguished.
출처: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| background radiation |
Radiation that comes from natural sources and is always present in the environment. This includes solar and cosmic radiation as well as radioactive elements in the ground, building materials, and the human body. Average annual dose of background radiation for an American is about 360 millirems.
출처: www.pbs.org/wgbh/pages/frontline/shows/reaction/et...
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