دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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.