(浮动基准面)
both spiritual and formal resemblance iconicity
临时侵蚀基准面
temporary base leuel of erosion
理论深度基准面
theoretical bathymetrical datum
lowest normal low water LNLW
lowest normal low water
局部侵蚀基准面
local base level of erosion
精化大地水准面
precise determination of geoid
precisely determined geoid