دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the random movement exhibited by microscopic particles when suspended in liquids or gases. It is caused by the impact of molecules of fluid surrounding the particle.

n: The uninterrupted and aberrant movement of the particle suspending in the liquid or gas. Found by English Brown in 1827. The higher the temperature, the acuter the movement.

n: 1. a substance whose particles are so fine that they will not settle out of suspension or solution and cannot be seen under an ordinary microscope. 2. the mixture of a colloid and the liquid. gaseous, or solid medium in which it is dispersed.

n: A particle smaller than 2 microns. The size and electrical charge（电荷） of these particles determine the different phenomena observed with colloids, for example, Brownian movement.

a substance with particle size so fine that it exists as a stable dispersion rather than settling out.

n: a mixture consisting of finely divided colloidal particles floating in a liquid. The particles are so small that they do not settle but are kept in motion by the moving molecules of the liquid (Brownian movement).