RT Journal T1 Construction and analysis on typical working cycle of wheel loader A1 MA Xiangming, SUN Xia, ZHANG Qiang PB Journal of Shandong University(Engineering Science) FD YR 2015 JF Journal of Shandong University(Engineering Science) JO Journal of Shandong University(Engineering Science) VO 45 IS 5 SP 82 DO 10.6040/j.issn.1672-3961.0.2015.095 K1 loader;eigenvalue;principal component analysis;cluster analysis;typical working cycle LK {http://gxbwk.njournal.sdu.edu.cn/EN/article/article_1928.shtml}