单词	Brownian motion
释义	Brownian motion noun Brown·​ian motion ˈbrau̇-nē-ən-  : a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium called also Brownian movement Word History Etymology Robert Brown †1858 Scottish botanist First Known Use 1849, in the meaning defined above Medical Definition Brownian motion noun Brown·​ian motion ˌbrau̇-nē-ən-  : a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the fluid surrounding the particles called also Brownian movement
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