TY - Journal of Yangtze River Scientific Research Institute A1 - XUE Kai-xi, ZHOU Chao-hui, TIAN Xing-hua, DUO Hui-hui, DING Chen, CAO Kai, QI Xiao-hong T1 - Application of Vertical Penetration Stratified Sampling Technique in Liquid-Plastic Limit Combined Testing Y1 - 2022-01-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 114 EP - 121 VL - 39 IS - 1 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20200939 ER -