fractional abundance

См. также в других словарях:

• fractional isotopic abundance — santykinis izotopo paplitimas statusas T sritis fizika atitikmenys: angl. fractional isotopic abundance; relative isotopic abundance vok. Isotopenhäufigkeitsverhältnis, n rus. относительная распространённость изотопа, f pranc. abondance relative… …   Fizikos terminų žodynas

• relative isotopic abundance — santykinis izotopo paplitimas statusas T sritis fizika atitikmenys: angl. fractional isotopic abundance; relative isotopic abundance vok. Isotopenhäufigkeitsverhältnis, n rus. относительная распространённость изотопа, f pranc. abondance relative… …   Fizikos terminų žodynas

• относительная распространённость — (напр. элемента, изотопа) [А.С.Гольдберг. Англо русский энергетический словарь. 2006 г.] Тематики энергетика в целом EN fractional abundancerelative abundance …   Справочник технического переводчика

• chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

• igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …   Universalium

• Noble gas — Group 18 Period 1 2 He 2 …   Wikipedia

• Trophic level — First trophic level The plants in this image, and the algae and phytoplankton in the lake, are primary producers. They take nutrients from the soil or the water, and manufacture their own food by photosynthesis, using energy from the sun. The… …   Wikipedia

• rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …   Universalium

• Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …   Universalium

• Helium — otherusesHelium (He) is a colorless, odorless, tasteless, non toxic, inert monatomic chemical element that heads the noble gas group in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the… …   Wikipedia