基于主成分分析和宽度学习系统的土壤铅镉重金属元素定量分析
吕树彬1,2, 杨婉琪1,2, 李福生1,2,*

Quantitative Analysis of Lead and Cadmium Heavy Metal Elements in Soil Based on Principal Component Analysis and Broad Learning System
LÜ Shu-bin1,2, YANG Wan-qi1,2, LI Fu-sheng1,2,*
Pb元素和Cd元素的主成分碎石图 (a): Pb; (b): Cd