dummy control section是什么意思

用法例句

After the evaluation of water quality and analysis of pollution source of Baishui River in Jiuzhaigou,the aquatic environment capacity is calculated using section-beginning control model.

以九寨沟县白水江为研究对象,在水质现状评价以及污染来源分析等基础上,采用段首控制法对其进行水环境容量计算。