TY - Journal of Yangtze River Scientific Research Institute A1 - ZHANG Jia-fa, DING Jin-hua, ZHANG Wei, WU Qing-hua, WANG Jin-long T1 - On the Criticality of Piping and the Significance of Its Classification Y1 - 2019-10-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 1 EP - 10 VL - 36 IS - 10 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20191106 ER -