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单词 Brownian
释义 Brownian, a.|ˈbraʊnɪən|
[f. the name of Dr. Robert Brown, who first described the movement in question.]
Brownian movement: the irregular oscillatory movement observed in microscopic particles or ‘molecules’ of all kinds suspended in a limpid fluid; also called molecular movement.
1871Bastian Orig. Lowest Organisms 46 Bacteria..which exhibit movements resembling those known as Brownian.1874Jones & Siev. Pathol. Anat. 28 Serum..crowded with fatty molecules, presenting an active Brownian movement.1875Darwin Insectiv. Plants iii. 64 Small granules which exhibited Brownian movements.
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