a suspension of finely divided particles in a continuous medium in which the particles are approximately5 to 5,000 angstroms in size,do not settle out of the substance rapidly,and are not readily filtered

• 在一连续介质中被细微分开的粒子形成的悬浮状态，粒子尺度约5至5，000埃，不会很快从该物质中分离，也不易被滤出