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单词	smectite
释义	smectite /ˈsmɛktʌɪt / noun [mass noun] A clay mineral (e.g. bentonite) which undergoes reversible expansion on absorbing water.The clay mineral smectite, with physical properties that make it unsuitable as a soil if it is wet, is only found in major amounts in covered stadiums.... Common clays are usually mixtures of clay minerals such as illite, smectite, and kaolinite, together with fine silica and other minor constituents. The clay is composed of illite and kaolinite, with minor amounts of chlorite and smectite. Origin Early 19th century: from Greek smēktis 'fuller's earth' + -ite1.
随便看	chemistry chemistry set chemitype Chemnitz chemo chemo- chemoarchitecture chemoattractant chemoattraction chemoattractive chemoautotroph chemoautotrophic chemoautotrophically chemoautotrophism chemoautotrophy chemoceptor chemocline chemoheterotroph chemoheterotrophic chemoheterotrophy chemoimmunotherapy chemoinformatics chemokine chemokinesis chemolithoautotroph

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