TY - Journal of Yangtze River Scientific Research Institute A1 - WANG Wei-biao,ZENG Jian,XIE Dong-feng T1 - A Calculation Method for Cumulative Frequency Below Low Tidal Level of Navigation Based on Real Water Depth: Taking Qibao Section of Qiantang Estuary as Example Y1 - 2016-09-25 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 1 EP - 4 VL - 33 IS - 9 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20160366 ER -