w value是什么意思

用法例句

The exploration and applicaion of W value method to the assessment of water body pollution of ground surface;

W值法评价地表水体污染状况的应用与探讨

The present situation and distribution characteristics of water quality in the Changjiang estuary is analyzed using the W value method, according to the hydrological and water quality data measured during the comprehensive harnessment and development plan of the Changjiang estuary at the end of 2002.

以2002年9月底长江口综合整治开发规划水文、水质原型观测资料为依据,运用W值法分析评价长江口河段水质污染现状及其空间分布特征。