To protect environment and prevent the jeopardize of pollutant, working over hydraulic characteristic of pollutant diffusing is very content from the aspect of hydrodynamics and hydrokinetics.

• 为了保护环境，防止污染扩散的危害，因此，从流体力学和动力学方而着手研究污染物在河道中扩散的水力学特性是很有意义的。